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Posted by nkurz 1 day ago

Acetaminophen vs. ibuprofen(asteriskmag.com)
476 points | 302 comments
magicalhippo 6 hours ago|
> But if acetaminophen is safer, then why don’t official sources tell you that?

Guess it depends on country. Here in Norway official sources[1][2] do say acetaminophen (paracetamol here) should be the default for treating fever and pain in kids, adults, pregnant women and elderly, and have for some time. Ibuprofen they say should be used with caution.

[1]: https://www.dmp.no/nyheter/behov-for-smertestillende-slik-ve...

[2]: https://nhi.no/for-helsepersonell/nytt-om-legemidler/arkiv-2...

vanderZwan 2 hours ago||
I feel like this is one of those things where Europe and the US are very different, culturally speaking - I've lived in the Netherlands, Germany and now Sweden, and the amount of painkillers used and prescribed here seems much lower than what Americans tell me is normal in the US.

Pain a warning signal from the body. It's something one should listen to, not just try to ignore and overrule. If I sprain my ankle it only hurts when I lean on it. Because it's healing. So I don't. Why would headaches or other "inconvenient" pains be different?

In my case headaches are usually caused by sleep deprivation causing high sensitivity to external stimuli, muscle tension, dehydration, or some combination of that. So I'll first try to take a nap and/or stick to low-stimuli environments, have a good stretch and/or heated up massage pillow for the neck, and make a quick home-made oral rehydration solution with some salt and sugar. That usually alleviates most if not all of the pain.

And I'm not saying painkillers should always be avoided. If I have insomnia-induced headaches in the morning and a long day ahead with many social interactions, then I know that headaches will make me a grumpy asshole, so I'll obviously will take a painkiller for everyone's sake. And sometimes I can only fall asleep if I take a painkiller to get rid of the headache first, so I need it to break the vicious cycle. I'm not saying people should "walk it off" here, just to focus on trying to figure out the actual cause first before medicating the symptom way. That's also healthier in the long run, no?

spzb 2 hours ago|||
AIUI one of the many quirks of the US health insurance system is that a lot of people have only minimal cover which doesn't include things like physiotherapy and rehabilitation treatment. That means that they often can't treat a painful condition at source so their only option is to mask the pain with painkillers.
vanderZwan 1 hour ago||
This is so absurd to me. The expression "prevention is better than cure" isn't just folk wisdom, in just about any country with nationalized healthcare the studies also confirm that this costs less money. The only exception I ever heard was a Dutch study in the 2000s suggesting that people growing older due to smoking less was going to increase healthcare costs, because people were getting older putting pressure on the pension system, but let's not peer further into that can of worms.

So by all accounts it should be cheaper for for-profit insurance companies too, unless they have ways to externalize the costs onto the rest of society. Which I guess is more circumstantial evidence for how messed up the system must be.

yonaguska 45 minutes ago||
> unless they have ways to externalize the costs onto the rest of society

UNH stock has been tanked all year, until the govt announced that they would raise Medicare advantage reimbursement rates. The insurance companies have an incentive to pursue volume instead of cutting costs for programs that the government is subsidizing. For everyone else, they just raise the prices which is a much more complicated issue.

nbaugh1 17 minutes ago||||
Well for one thing, in America, you gotta get back to work.

Work a manual labor job or one where you're on your feet all day and sprained your ankle? Would you rather miss a week of pay (or worse lose your job) or take some pain killers and work through it?

vanderZwan 2 hours ago||||
> That's also healthier in the long run, no?

Long-winding tangential anecdote (which is why I'm replying to myself in a separate comment), but I have pretty extreme example of this: I managed to avoid nearly all suffering after getting a tonsillectomy in my mid-thirties, while using almost no painkillers.

My ENT surgeons warned that me "I'd hate him for about a month, then I'd love him for never having to deal with [serious medical condition that justified the removal of tonsils] again". He prescribed all kinds of stuff to alleviate the expected suffering, and advised me to try to take the weakest options I was comfortable with, because the heavier ones might have some unpleasant side effects. It's the only time in my life I've been prescribed painkillers at all, actually (this was in Sweden, btw).

I got codeine/paracetamol as a coughing suppressor and mild painkiller, a couple of heavier painkillers for if it got worse (I forgot the name but some kind of heavy-duty variation of diclophenac that you can only get with a prescription), and some kind of nasty solution to gargle with that supposedly would numb my throat if it got really bad. I've been told this is nothing compared to what you can expect in the US.

Then in the evening after the surgery, when I was trying to eat a soup with my mom, I realized soup didn't hurt as much as drinking plain tap water. And then I thought: isn't it odd that drinking plain water feels like a thousand paper-cuts in the open wound in my throat, but whenever the coughing made the wounds open and bleed, the blood doesn't hurt at all? Blood is mostly water, so what is the difference? Could it be the salt? Is this similar to why drinking demineralized water is bad for you? What's the opposite of demineralized water? Oral rehydration solution. Ok, trivial to make, let's try that. I'll drink it luke-warm to be close to body temperature too.

Turns out that that works. Oral rehydration solution is almost painless to drink after a tonsillectomy. I know this is anecdata, but sample size three: I've since shared this information with two friends who got a tonsillectomy, and they've been extremely grateful for this tip.

It even seemed to speed up my recovery, probably due to a lack of irritation triggering inflammation. I was eating solid food within days. DAYS. My mom, a retired family physician herself, couldn't believe her eyes.

I ended up only needing the codeine/paracemtal in the evening to suppress coughing in my sleep, and brought back all the other pain-killers without opening them.

huhkerrf 2 hours ago||||
Since we're talking about acetaminophen and ibuprofen, in France you're liable to end up with a medicine cabinet full of acetaminophen, because almost anytime you go to the doctor with any type of pain, they add it to the prescription.
wincy 36 minutes ago||
Interesting, in the US they often do that too but I’ve personally never filled it because insurance doesn’t cover over the counter medications. So I’d have to pay cash for it.
kryogen1c 32 minutes ago||||
>Pain a warning signal from the body

Hard agree, same with fevers. Heat helps kill many diseases, dont blunt your body's defenses.

There are exceptions to both rules, but many people forget which part is the exception and which part is the rule.

brazzy 1 hour ago||||
> Pain a warning signal from the body. It's something one should listen to, not just try to ignore and overrule. If I sprain my ankle it only hurts when I lean on it. Because it's healing. So I don't. Why would headaches or other "inconvenient" pains be different?

Pain is also suffering, and there is no virtue in suffering needlessly.

Even more importantly, there's also chronic pain, which can severely affect quality of file permanently and is essentially an illness all of its own. Research supports the concept of "pain memory", where chronic pain develops as the result of leaving the pain from a temporary condition untreated.

vanderZwan 23 minutes ago||
None of this is in disagreement with my argument and comes across as actively ignoring the part where I explain that I am not advocating to "walk it off".

The discussion started in the context of taking painkillers regularly for things like "inconvenient head-aches" without pausing to investigate what causes those headaches. It should be clear from the context that I am not talking about something like people struggling with migraines. I know they try to figure out not to have them in the first place, and if they do have them deserve all the pain relief they can get. I've had migraines myself growing up.

Nobody is saying that people who suffer from chronic pain shouldn't have a relief from their suffering. But as another comment pointed out: the US seems to have a big issue with untreated conditions in general than other countries.Not in the sense of not treating the pain, but in the sense of not treating the conditions leading to pain. You don't even have paid sick leave apparently. Tackle issues like that and there will be fewer chronic pain sufferers to begin with.

internet_points 1 hour ago||||
> home-made oral rehydration solution

water?

EDIT: I see it's a thing. Salt, water and sugar.

vanderZwan 38 minutes ago||
Apologies, I could have clarified that (then again my comment already was a wall of text).

The body does not absorb water passively but actively, and it's been known for a very long time that water with a bit of salt and sugar is absorbed faster. This has been crucial in reducing (especially child) mortality due to acute fluid loss from diarrhea due to, say, cholera[0]. (I personally find amazing that Robert K. Crane figured out the mechanism behind it in the sixties already[1])

Now, "proper" ORS, according to the WHO, is the following:

    Sodium chloride               2.6 gr/l
    Glucose, anhydrous           13.5 gr/l
    Potassium chloride            1.5 gr/l
    Trisodium citrate, dihydrate  2.9 gr/l
However, that is in the context of oral rehydration therapy:

glucose facilitates the absorption of sodium (and hence water) on a 1:1 molar basis in the small intestine; sodium and potassium are needed to replace the body losses of these essential ions during diarrhoea (and vomiting); citrate corrects the acidosis that occurs as a result of diarrhoea and dehydration.

So you can usually get away with not having the potassium and trisodium if the reason for dehydration is neither diarrhoea or vomiting.

This translates to a simple home recipe of:

    1 liter (or 4.25 cups) of water
    1/2 a teaspoon of salt (3 gr)
    2 table spoons of sugar (30 gr) OR 1 table spoon of glucose (15 gr)
The reason for doubling the amount of sugar is that the active absorption of water relies on glucose, while regular sugar is made out of sucrose. Sucrose breaks down into equal parts fructose and glucose (both have identical chemical formulas but a different arrangement of the atoms).

[0] https://en.wikipedia.org/wiki/Oral_rehydration_therapy

[1] https://en.wikipedia.org/wiki/Sodium-glucose_transport_prote...

[2] https://www.who.int/publications/i/item/WHO-FCH-CAH-06.1 page 12 of the linked on that page (labeled as page 3)

lapcat 1 hour ago||||
> Pain a warning signal from the body. It's something one should listen to, not just try to ignore and overrule.

This is vastly overstating the rationality of the human body. It's no more rational than the human mind, which is often quite irrational. Your body isn't the product of medical school, nor intelligent design, but rather random natural selection, which is decent but demonstrably far from perfect.

vixen99 56 minutes ago||
Especially if a new one, pain is undoubtedly a 'warning signal from the body' which is a succinct metaphor we all understand and has a clear meaning. If you don't know why or from whence the pain, check it out. It may be one of those things or perhaps not.
lapcat 42 minutes ago||
The previous commenter appears to argue that you need to diagnose every headache, which sounds absurd to me.

Occasionally I have a headache. Not frequently, and I don't necessarily know why. These things just happen. I take a painkiller, and problem solved. I've been seen by doctors over the years for physicals or other reasons, and there's no indication of any underlying medical condition. An occasional headache is not an indicator of something more serious, and the painkiller is not "masking" a larger problem.

The same goes for random muscle aches. They're infrequent, but they can happen, for whatever reason, and there's no reason to panic or to suffer when you can just make them go away.

I don't think I'm unusual here. As far as I've heard, random, infrequent headaches or other aches are extremely common.

Moreover, there are pains that we know the cause: for example, I experience a bump or a cut. My body continues to annoy me with pain unnecessarily. Yes, I'm healing, I'm well aware of that. I just need my body to STFU with the pain and stop reminding me of it.

bluecheese452 14 minutes ago||
Thank you, I share this sentiment but couldn’t quite put it into words. Sometimes it isn’t that deep.
beAbU 2 hours ago||||
> the amount of painkillers used and prescribed here seems much lower than what Americans tell me is normal in the US.

Americans' relationship with painkillers is absolutely unhinged.

Insanity 39 minutes ago||
Might just be an artifact of the broken healthcare system. Painkillers are cheap and over the-counter. Going to a doctor is not.

Additionally, in EU you can just take a sick day to rest and recover pretty much any time you need it. In the US you have limited “sick days”. E.g I now only have 6 “sick days” per year.. (and I’m fortunate to work in tech, I just WFH when I’m under the weather. But people who are less well off need to suck it up and go to work).

nbaugh1 13 minutes ago||
Like I just mentioned in another comment, they're also a way to get you back to work ASAP. Just about everyone NOT working a comfy white collar office job needs to be working in order to make money. Time off is less income, people can't afford that so they do what they need to do to get back to work.

Sprained ankle? Injured back? Headache? Broken bone? All things that people work through everyday with some NSAIDs because calling out sick means losing income

markovs_gun 2 hours ago||||
Perdue Pharma/The Sacklers went on a huge campaign in the 90s convincing doctors and the general public that pain was bad and worth stopping at any cost and even though they were pushing opioids, I can imagine this also increased the cultural tendency to use NSAIDs as well.
Mordisquitos 1 hour ago||
I agree that Purdue Pharma was probably the most significant factor, maybe enhanced by the relative ease of granular lobbying of private doctors as compared to the challenges it may face in universal healthcare systems. However, I do suspect that the limited rights of most US workers to take sick leave served as one more cultural advantage in favour of Purdue's campaign.

In many countries if a doctor believes you're too sick to work you have a right to take leave until you recover, without risking your job and without expending limited "sick days". In those circumstances the doctor will of course prescribe something for your pain, but as a patient you have no incentive to insist the painkiller is strong enough to allow you to continue working.

gregoryyy 5 hours ago|||
Yup - in the UK, paracetamol is usually recommended for general pain relief before Ibuprofen. Additionally, Ibuprofen and NSAIDs have a lot of interactions which can make them unsafe - SSRIs or blood thinners for example.
lloydatkinson 3 hours ago||
Where does Aspirin fit into this? I only use paracetemol and ibuprofen. The one time I tried asprin I got a stomach pain.
mrcrm9494 3 hours ago||
aspirin is an NSAID, taking it modifies the prostaglandine levels (through its COX inhibition) and this influences the mucosa of your stomach. ibuprofen can still have the same side effects, because its belonging to the same class of drugs.
schnitzelstoat 5 hours ago|||
It’s the same in the UK - paracetamol is the default. Ibuprofen is better for reducing swelling, inflammation etc.
rustyhancock 4 hours ago|||
Ibuprofen is better are reducing fever and managing headaches.

Paracetamol is the safer version Phenacetin. You used to be able to buy aspirin, phenacetin and caffeine..but phenacetin with withdrawn. APC when it was marketed was very popular but soon you were told to never give children aspirin for a fever so we used Paracetamol. Then Phenacetin was withdrawn and paracetamol became part of APC (like Alka selzta XS , or just the popular caffeine paracetamol combos)

Paracetamol came in as safer but similar, yet no where near effective. It captured bith the market feeling of its pros and cons. So we interpreted it as safer than alternatives (especially aspirin for children due to Reye syndrome). But also dangerous which might be why OPs view was that ibuprofen is safer.

The NNT (number of people you'd need to take it) to be headache free after 2 hours is about 12-20 for paracetamol. But only 7-10 for ibuprofen.

It's quite surprising that paracetamol became the defacto analgesic given it performs so poorly but it was historical inertia. And plenty of people argue that if we were to start over we would not make paracetamol OTC.

sixeyes 4 hours ago|||
Wiki for phenacetin says it's mechanism of action is being metabolized into paracetamol. IDK about your "nowhere as effective".

It was withdrawn for sometimes being metabolized into another, toxic and carcenogenic, molecule.

rustyhancock 3 hours ago||
Here is a summary of COCHRANE evidence on Paracetamol "widely used and ineffective"[0].

It's a paradox no?

Paracetamol is only the presumed only active metabolite, and that is why paracetamol rapidly replaced phenacetin.

There is a quirk though, phenacetin actually delivers paracetamol to your brain and spine (where it primarily reduces pain) faster than an oral dose of paracetamol.

Similarly IV paracetamol is far more effective that oral paracetamol.

Phenacetin was also considered mildly addictive, and induced a gentle euphoria and then sedation.(We still see sedation after paracetamol in children and the elderly). But general use we don't see these effects in paracetamol, why did phenacetin do this more effectively? Probably the higher peak levels around nerve endings.

These effects are both wanting of an explanation of phenacetin is just paracetamol and directly analegisic.

[0] https://web.archive.org/web/20240721144157/http://www.eviden...

Nursie 4 hours ago||||
Interesting.

I guess it tracks with personal experience. I find Paracetamol is OK for fevers/generic cold symptoms but absolutely useless for a headache, Ibuprofen is the only thing that shifts them.

Well it's the only thing that shifts them now I'm in a country where I can't buy soluble aspirin and codeine OTC.

rustyhancock 3 hours ago||
I end up using paracetamol often for pain because it's what's to hand.

What annoys me is that so many people have your experience and are effectively gaslit about the fact it seems to often perform so poorly.

trvz 3 hours ago|||
Reminder: don't take medical advice from someone who can't write correctly.
rustyhancock 2 hours ago||
Very interesting though that the original article makes no comment on efficacy. It's all about metabolic safety which is not contentious.
ncruces 2 hours ago|||
Same in Portugal.
socalgal2 4 hours ago|||
Here in my body, it tells me acetaminophen does absolutely nothing for pain where as ibuprofen does. I wouldn't take ibuprofen for fever
bluGill 1 hour ago|||
I once got it to make a small difference for pain - but I was in the hospital (surgery recovery) where the doctors were giving me more than the daily maximum.
criddell 22 minutes ago|||
This might sound like woo, but sometimes I'll find a quiet place and just sit there and focus on the pain. I try to really understand the sensation that's being registered as pain by trying to notice all the properties of it (is it throbbing, burning, etc...).

Occasionally I'll find that the more I try to identify specific features of the sensation, the harder it gets to do so and the pain sensation fades away.

iamniels 5 hours ago|||
In Western Europe too.

> but it does absolutely nothing with actual pain. It is placebo at best.

This is simply false.

shlant 5 hours ago|||
you responded to the wrong comment. I assume this want mean for https://news.ycombinator.com/item?id=47860061
watwut 4 hours ago|||
It is not false. It does nothing. Head hurts, you take paracetamol ... head still hurts. The belly hurts, you take paracetamol ... nothing change.

When I took ibuprofen it did actually made an actual real change.

franga2000 4 hours ago|||
"I took it and it didn't work so it's a fake placebo drug" - wow, your scientific method is flawless, have you considered a career at the US Department of Health?
maleldil 2 hours ago|||
That might be a good fit considering who's in charge today.
chintler 4 hours ago|||
Guideline #1 for comments-

Be kind. Don't be snarky. Converse curiously; don't cross-examine. Edit out swipes.

throw1234567891 4 hours ago||||
Maybe you had an inflammation-induced pain. That would explain why ibuprofen helped, and paracetamol did not.
pjc50 3 hours ago||||
I have a counter-study with size n=1: I did all my recovery from tonsilectomy on paracetamol and definitely noticed it working. That was however on the maximum safe dose.

(one of the major problems with paracetamol is that the effective dose is only a few multiples away from the dose which starts to cause liver damage! It is by a long way the most dangerous OTC drug)

rustyhancock 4 hours ago|||
You're partially right compared to placebo only about 5% of people are painfree over the effect of a placebo when taking paracetamol.

Paracetamol got it's start as replacing the more effective but much more dangerous and withdrawn drug Phenacetin.

Why don't people notice that it's such a small benefit over nothing? Well because placebo effect is quite good for pain and pain is usually transitory anywhere..if you have a tension headache you're probably going to aim to relax. Turn away from the screen or even have some caffeine and those are more effective than paracetamol!

freehorse 3 hours ago||
Where did you pull this 5% from? There are gazillions of studies showing higher or lower efficacies for different kinds of pain. Along with the inaccuracies about Phenacetin (whose MOA is metabolising into paracetamol).
rustyhancock 3 hours ago||
You will indeed find various figures for various pain types all are far worse than ibuprofen.

Here is an example from the Cochrane library

> For the IHS preferred outcome of being pain free at two hours the NNT for paracetamol 1000 mg compared with placebo was 22 (95% confidence interval (CI) 15 to 40) in eight studies (5890 participants; high quality evidence), with no significant difference from placebo at one hour.

A NNT of 22 means that in absolute terms 1/22 people met the positive endpoint criteria more than placebo. This figure is usually quoted as 20% for placebo and 25% for paracetamol giving NNT of 20.

The NNT of 22 gives 1/22= 4.5%.

https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD...

emj 2 hours ago||
"pain free" is a long way from the pain is manageable. Pain is an understudied subject, where we have too little knowledge. Just using the word manageable is an indication of this.
rustyhancock 2 hours ago||
That's very true, but the metric is applied to all medications you compare against that's what's important. You also just get a baseline idea of what's good by guessing what you'd accept.

Episodic tension type headache tested with ibuprofen Vs placebo NNT is 14. (Btw that's not great itself) But it's better than paracetamols often quoted figure 20.

Here's why I say it's not great. Why don't you guess some reasonable NNTs for say moderate depression treated with SSRIs, or no relapse in schizophrenia treated with an antipsychotic. Now guess the NNT for a statin to prevent a first heart attack.

SSRI for moderate depression about 10, antipsychotics to prevent schizophrenia relapse over 2 years NNT= 3 (excellent )Statin to prevent a first heart attack 200! (This one always shocks me). Statins have a clear role of course.

[0] https://thennt.com/nnt/ibuprofen-treatment-episodic-tension-...

apatheticonion 5 hours ago|||
Really? I get headaches semi-frequently and my first line of defense is ibuprofen, I use acetaminophen sporadically as a last resort
dncornholio 1 hour ago|||
Why? Does ibuprofen work better? It's bad for your stomach walls.
sfn42 4 hours ago|||
I take both. 500-1000mg acetaminophen, 200-400mg ibuprofen. Usually helps for headaches which I get frequently. I only take them for the worst headaches though, so probably once every couple of weeks on average.
ac2u 3 hours ago||
Yeah if I need to I take both also. In addition I be sure to have a caffeinated drink also as caffeine has been shown to both speed the absorption and boost the efficacy (5-10%) of paracetemol over a multi hour period. https://pubmed.ncbi.nlm.nih.gov/17442681/
jcul 4 hours ago|||
In Ireland you can buy acetaminophen in stores, gas stations etc.

For ibuprofen you need to go to a pharmacy.

lazzurs 2 hours ago|||
I couldn't get over this after moving here from the UK where you can pick up a pack for 10p in a supermarket.
domh 2 hours ago|||
That is interesting. In the UK they're both available pretty much everywhere, and they're some of the cheapest drug prices I've seen anywhere in the world... ~20p for 16 tablets or something.
oulipo2 5 hours ago|||
Same in France
watwut 5 hours ago||
The only issue with treating pain with paracetamol is that it does not work at all against the pain.

It works against fewer or maybe mild inflammation and what not ... but it does absolutely nothing with actual pain. It is placebo at best.

sitharus 5 hours ago|||
> but it does absolutely nothing with actual pain

Neither paracetamol nor ibuprofen work by blocking pain. Depending on the type of pain and your physiology it can range from really effective to not at all.

I only take paracetamol, it works better than both ibuprofen and opioids for me. I know other people who have the exact opposite experience. There’s no absolute here.

omnimus 5 hours ago|||
Yeah paracetamol does absolutely nothing to me with pain. I thought its mainly fever medicine.
cassianoleal 4 hours ago||
Same here. Paracetamol also gives me pretty strong stomach aches whereas ibuprofen rarely has a gastric effect and when it does it's mild at best. I've been told by many people that the opposite should be true but oh well.

I wish they dipyrone was sold here, but alas I can only get it when I travel abroad.

sitharus 3 hours ago||
With medicine both can be true, the response depends on so many factors in your body. Same way that for some people, particularly those with ADHD, taking stimulants can make them sleepy.
tpm 5 hours ago|||
Yeah, for me paracetamol is worse in everything - fever, pain, etc.

For mild stuff I use ibuprofen, if it gets worse, diclofenac works every time.

arethuza 4 hours ago||||
Many years ago I had 4 surgical procedures done around my nose/throat at the same time - straightening a deviated septum, turbinectomy, enlarging the openings into my sinuses and removing my tonsils. This meant I couldn't breath through my nose for about a month - and breathing through your mouth when you've just had tonsils removed is quite painful.

Soluble paracetamol literally turned the pain off like a switch - of course I was limited as to how much I could take, which I was careful to stick to but I was almost in tears waiting for the time to come where I could take more paracetamol.

So in some situations paracetamol can be an extremely effective painkiller.

danlitt 4 hours ago||||
It may not work for you, I don't know. But it absolutely does work in general!
postexitus 5 hours ago|||
What is actual pain?
watwut 4 hours ago||
When it hurts. Like, when your head hurts for example.
pugio 8 hours ago||
Really lovely article. In paramedicine we usually treat 10g of acetaminophen in a 24-hour window as a potentially fatal overdose. That's also why the law in Australia was changed to require acetaminophen to come in blister packs (harder to get each pill out) of no more than 16. At 500 mg, that only gets you up to 8 g if you eat the whole thing, which is still hopefully non-fatal.

I always thought a simple over-the-counter supplement (NAC) being the cure for an overdose was so cool. It's a pretty cool substance in a lot of ways, and this is a great spur to myself to research it more thoroughly.

eru 7 hours ago||
Here in Singapore NAC is sold to make muckus more liquid to alleviate coughs.

Apparently for some people it also helps with lessening tolerance for their ADHD meds, but I'm not so sure about that.

user_7832 7 hours ago|||
> Apparently for some people it also helps with lessening tolerance for their ADHD meds, but I'm not so sure about that.

I'd believe it. I first heard of NAC on the nootropic subreddit in a past lifetime. The benefits vary, but generally it's a safe thing with a low chance of making anything worse, but a possibility to improve things. Many neurodivergent folk have written about how they benefit.

I'd give more info on the exact benefits they found (iirc OCD and rumination loops could be broken more easily), but unfortunately my memory is failing me.

jcynix 4 hours ago||
You'll find a detailed description oft potential effects and uses here: https://en.wikipedia.org/wiki/Acetylcysteine (aka NAC)
CalRobert 7 hours ago|||
How is nac (acetylcysteine) delivered there? I can buy dissolvable tablets here in Europe but from what I see that’s less helpful for mucous, things like mucomyst require inhalation, which isn’t in otc products I know of.
rdevilla 6 hours ago|||
In the Philippines it's available as an effervescent tablet to be dissolved in water. They still tend to work better than the western remedies (guaifenesin etc) even in this form IME.

Usually here in Canada it's available in capsule form which I find less effective.

CalRobert 6 hours ago||
Same here actually, I find it slightly helpful but the effect’s useful time is limited. I’ve wondered if I could capture the gas released while bubbling and inhale that…
elric 4 hours ago||||
Dissolvable tablets & powders are still useful for getting rid of mucus. Maybe inhaling is better, but anecdotally the tablets seem to work.
Sammi 3 hours ago||
The dissolvable tablets completely fix a runny nose for me. Much better than any nose spray, which tend to irritate the nose and lead to chronic runny nose if taken for too long.
eru 3 hours ago||
Have you tried a neti pot or similar?
jack_pp 7 hours ago|||
Same where I'm from, it's in pill / capsule form
dgan 5 hours ago|||
I randomly bought NAC just to try it. I dont know about the chemical interactions, but going out with collegues at that time taught me that it's basically impossible to get drunk. Usually a pint of beer is enough to make le feel at least a little dizzy, but when taking NAC, it was all like drinking water
keane 4 hours ago|||
Just a note: “research about the safety of taking NAC every day for the long term is limited.” cf. a concerning 2019 animal study regarding higher risks of cancer https://doi.org/10.1172/jci.insight.127647 also discussed at https://www.science.org/content/blog-post/n-acetyl-cysteine-...
jcynix 4 hours ago||||
NAC taken before consuming alcohol has a positive effect apparently, but taken afterwards it's detrimental as mentioned here: https://en.wikipedia.org/wiki/Acetylcysteine
Gasp0de 2 hours ago|||
On mice.
ButlerianJihad 4 hours ago|||
Vaccine Ordering https://xkcd.com/2422/
dgan 4 hours ago||
Took me a while, because i pronounce "Pfizer" as "pfee-tseh-r" in my head
cubefox 2 hours ago||
That's the original pronunciation
elric 4 hours ago|||
When I go out drinking with my pharmacist buddy, we take NAC before going out. He swears it makes hangovers less likely. I can't say I've noticed that particular effect, but I do seem to sleep a bit better on those nights.
rao-v 8 hours ago|||
Could somebody package Tylenol with a sufficient amount of NAC to de-risk it? I suspect such a formulation would not require trials?
986aignan 1 hour ago|||
Certain esters have been found to be much safer (in mice, at least):

> The glutathione hepatic values in mice obtained by intraperitoneal injection of the ester are superimposable on controls and the oral LD50 was found to be greater than 2000 mg kg^-1 and the intraperitoneal LD50 was 1900 mg kg^-1 ...

That's for pyroglutamic and glutamic acid esters of paracetamol: https://pubmed.ncbi.nlm.nih.gov/8799871/

and more general analogs apparently can also be designed to not produce NAPQI:

> Thus, in 2020, N-sulpharyl-APAP prodrugs 39–40 (Fig. 11) were developed. [...] They are not hepatotoxic because they do not generate toxic metabolite NAPQI, even in concentrations equal to a toxic dose of APAP (600 mg kg^−1 in mice).

https://pubs.rsc.org/zh-tw/content/articlepdf/2024/ra/d4ra00... p. 9702.

These would probably require trials, though.

djsavvy 7 hours ago|||
See superscript 6 on the article. Apparently NAC might has side effects of its own.
keane 4 hours ago||
One of the side effects in a study in mice was inducing lung cancer: https://doi.org/10.1172/jci.insight.127647
triage8004 7 hours ago|||
NAC is so amazing for us in terribly polluted areas. Also great before drinking
harmonics 2 hours ago|||
I am blessed with living in one of the most polluted areas in the world (PM2.5 going into thousands of µg/m³ in winter; summers are not much better due to dense chemical smog). Can you say more about how you're using it to combat that? Thanks!
garyclarke27 4 hours ago|||
Glycine + NAC even better, both precursors for Glutathione, Glycine also great for sleeping.
ncruces 2 hours ago|||
Similar rules in Europe, or at least, Portugal.
throwaway27448 8 hours ago|||
What does ingesting 10g of acetaminophen even look like? I've got to imagine the fatal dose is far, far, far lower with chronic usage. Finding out that people are ingesting grams is profoundly disturbing.
mzl 5 hours ago|||
I've been prescribed slightly more than 5g per day (2 x 650mg tablets every 6 hours) for pain after an operation jointly with ibuprofen, which is scarily close to the limits.
TheOtherHobbes 3 hours ago||
I managed to overdose by accident with severe dental pain. Wasn't thinking straight, took about 8g - which is even more scarily close to the limits.

I'm fairly sure that caused some liver damage. I wasn't aware of anything apart from feeling a bit weird.

At the time, I had no idea it was potentially deadly.

devmor 7 hours ago||||
I have taken 4-5g in a day while suffering from intense pain before.

There is a limit to the amount of opioids they will prescribe you, even if you are in mind shattering pain. For instance while attempting to get your dental insurance to actually cover a treatment you may find yourself between risking organ damage or risking $5000+ in ER visit bills only to have them refuse to give you anything but Tramadol.

4gotunameagain 6 hours ago|||
It is mind boggling how statements like that are possible in the US.

I guess it is much better than the situation before that, where you paid $5000+ and they also gave you an opioid addiction.

AnthonyMouse 3 hours ago||
> I guess it is much better than the situation before that, where you paid $5000+ and they also gave you an opioid addiction.

Having a condition that actually warrants strong opioids and not being able to get them at any price is definitely not an improvement.

The problem is fundamentally that we want to pretend doctors can always distinguish two people describing the same symptoms when one person actually has them and the other is trying to get drugs. The often can't, so you can either make it hard for people to get pain medications even if they need them, or you can make it easy for people to get them even if they don't. And between these the second one is unambiguously better, because the first one is the government screwing innocent people and the second one is guilty people screwing themselves.

freedomben 3 hours ago||
> And between these the second one is unambiguously better, because the first one is the government screwing innocent people and the second one is guilty people screwing themselves.

Could not agree more. Depriving people with legitimate pain of opioids is IMHO legitimate torture. It's a bit of a variance on the trolley problem in that the doctor/government isn't causing the pain, but their inaction is prolonging it.

kakacik 5 hours ago|||
Whenever people here mention to my critique of US healthcare how its now mostly solved problem now, its 'good' to see the other side and reality. It certainly doesn't seem solved unless you have a million or two just laying around on the account, while mortgages and kids tuitions are paid. And I can easily imagine a long term condition or 10 which, if unlucky in terms of treatment cost coverage can wipe out that sum in a decade or two, for a single person.

Seriously, how can you guys consider this acceptable. I am not of faith but doesn't bible teach to be kind to your fellow men above all? One would expect more adherence to such basic moral rules in such conservative christian society.

kelnos 4 hours ago|||
> Whenever people here mention to my critique of US healthcare how its now mostly solved problem now

Who says that? I don't think anyone sane can believe that US healthcare is "solved".

anon7000 5 hours ago||||
I don’t know a single person in my life who thinks US healthcare is good, so that’s weird. And many my peers a have good jobs with good health insurance. Everyone I know has at least one bad story about insurance, if you’ve ever had more than really basic checkups.
AnthonyMouse 3 hours ago|||
The problem with the US system is that it doesn't know what it's trying to be.

If you did a socialist system then everything is "free" but possibly slow and expensive on the back end when the government isn't efficient.

If you did a libertarian system then everything is cheap but it's caveat emptor because nobody is stopping you from buying morphine for $10 from Amazon.

The US system isn't either one. It pretends to be a market sometimes but then has a bunch of rules to thwart competition. Doctors are required by law to do residency but the government limits the number of residency slots in response to lobbying from the AMA so there aren't enough doctors. "Certificate of need" laws explicitly prohibit new competitors for various services. Insurance is tied to employment to make it hard for individuals to shop around. Laws encourage, require or have the government provide "prescription drug coverage" to make patients price insensitive so drug companies can charge a huge premium for patenting a minor improvement or simple combination of existing drugs and have the patient will something which is marginally if at all better even if it's dramatically more expensive because they don't see the cost when the insurance/government is required to pay for it.

It's a big pile of corruption, because all that money is going to places. But then if you try to fix it, half the population insists on doing the first one and the other half is only willing to do the second one, and the industry capitalizes on this to prevent either one.

Maybe instead we should do both rather than neither. Have the government provide a threshold level of services, like emergency rooms and free clinics and anything more than that the local government wants to fund, and then have a minimally regulated private system that anyone can use if the government system doesn't satisfy them.

petesergeant 8 hours ago||||
> What does ingesting 10g of acetaminophen even look like?

20 not-especially-large tablets

fc417fc802 1 hour ago|||
As an American this is such a weird question to me. I purchase my ibuprofen and benadryl in bottles of anywhere from 400 to 1000 pills every few years.
throwaway27448 8 hours ago||||
Is this not suicidal behavior?
adrianmonk 7 hours ago|||
Apparently a common source of problems is taking two different medications without realizing they both contain acetaminophen.

Suppose your arthritis is acting up, so you start taking Tylenol 8hr Arthritis Pain[1]. That's 2 tablets every 8 hours. They're extended-release with 650mg per tablet. A total of 3900 mg in 24 hours.

A few days later you get the flu, so you decide to add what seems like a completely different medication: Theraflu Flu Relief Max Strength[2]. It has a cough suppressant and an antihistamine. But each caplet also contains 500 mg of acetaminophen. It says to take 2 caplets every 6 hours, so you take 8 of them in 24 hours[3]. That's another 4000 mg.

Between the two, you're at 7900 mg.

Then you wake up in the morning and take both medications, but 30 minutes later you've forgotten you took them. You're not thinking straight because you're sick. So you accidentally take a second dose. That additional 2300 mg brings your total to 10200 mg.

---

[1] https://www.tylenol.com/products/arthritis/tylenol-8hr-arthr...

[2] https://www.theraflu.com/products/day-night-flu-relief-max-s...

[3] You weren't supposed to take 8 of them, though. If you'd read the label very carefully, you'd have seen it also says not to exceed 6 in a 24-hour period.

psidebot 6 hours ago|||
My personal rule is to only purchase over-the-counter meds with a single active ingredient. I'd rather separately take an antihistamine, expectorant and painkiller than a concoction where I have to read the whole label and do math while sick to separate the doses and timings.
topham 6 hours ago|||
There are some that are very hard to find as a single ingredient. Recently I was purchasing a medication for back pain, I had a choice as to which other ingredient I wanted, but I didn't have the choice of none. I picked the combined ingredient I don't like to take, because I wouldn't be adding it on top.

I did toss on the other option, stand alone, at one point so I could get some sleep.

It left the medication I was more comfortable taking as an add-on option if things got bad enough. (This particular medication has much lower risk of overdose, so if I got stupid and took it again there would be no significant additional risk.)

It's ironic, but taking the combined medication with a known higher risk of its own was better than taking the lower risk medication.

One was controlled, higher risk, taken at specific times, while the other was taken in addition, on demand, as required.

petesergeant 5 hours ago|||
Specifically this is one reason they’ll sell you cocodemol or Vicodin but not codeine or hydrocodone directly — if you take enough to get a codeine high, you’ll have taken a toxic amount of paracetamol/acetaminophen, so they assume you won’t.
i_think_so 5 hours ago|||
Doin' the Lord's Work here, sir.

Also, loved your TV show back in the day. :-)

protocolture 7 hours ago||||
I took 2 full packs in a day once while trying to recover from severe pain. Didnt find out until later that it was supposedly a fatal dose.
throwaway27448 7 hours ago|||
Mm. Apparently i don't understand pain and the medication it drives people towards.
matwood 4 hours ago|||
> Apparently i don't understand pain

I didn't until I had a bulging lower back disc pressing on my sciatic nerve. My leg felt like it was constantly on fire no matter what position I put myself in. In the past I've torn my ACL and had surgery to reconstruct and that pain was like stubbing my toe compared to the back pain. I understood how people become addicted to pain meds after my back situation.

user_7832 7 hours ago||||
Totally get it, I too only understood it "theoretically" till I had a (fairly minor!) dental operation.

... Suddenly I'm maintaining a continuous note of when I'm taking which medicine to avoid crossing safe limits (which I anyway was crossing most days).

I was only told to take 2 paracetamols a day (bullshit dose, I'd be waking up from the pain even with more pain meds).

"Diclofenac for rare use" - well, if nothing else is touching the pain, is it an emergency?

Eventually after forever I was able to transition to Ibuprofen + paracetamol. And I already have a health condition which is heavy on my kidneys... pain management can be absolutely crazy.

fc417fc802 50 minutes ago|||
Pain management can be crazy but in your case it sounds like they simply didn't prescribe the appropriate medication presumably due to the anti opiate hysteria that has taken hold.
simoncion 7 hours ago|||
> Apparently i don't understand pain...

Speaking as someone who is not-infrequently in significant pain, I sincerely hope that you never have to.

i_think_so 5 hours ago|||
Did you suffer any liver function damage as a result?

I presume your protein intake was adequate and diverse prior to this misadventure....

applfanboysbgon 8 hours ago||||
This can easily happen over the course of 24 hours if you're in "fuck me I'll do anything to make it stop" levels of pain. I've taken more than 20 ibuprofens in a day a few times in my life, which, while not medically advised, did not kill me. I actually had no idea acetaminophen was so dangerous.
sozforex 7 hours ago||
Just in case, ibuprophen does not work well for pain relief [at lest for some kind of pain]. Paracetamol [acetaminophen] usually is much better against pain. And paracetamol + ibuprophen can help with strong pain for which neither paracetamol or ibuprophen work at normal doses.
topham 6 hours ago||
Not really. Both address different sources of pain, and do so using different processes.

Ibuprofen is a Nonsteroidal Anti-inflammatory Drug (NSAID) that reduces pain and inflammation, while acetaminophen does not. (Acetaminophen is believed to act mainly in the brain rather than at the site of injury).

Ibuprofen- Fundamentally, if the pain is caused by inflammation, reducing the immune systems response to it can reduce pain, but if the pain is more acute it won't make a dent.

With acetaminophen, taking more isn't a solution in most cases, you need another method to reduce the pain further if it doesn't achieve its goal.

(That's why it's combined with things like codeine, which affects the brain in a different way for an additive effect)

kgwgk 6 hours ago||
> you need another method to reduce the pain further

I don’t know about “most cases” but often you don’t want to reduce the pain _further_, you want to reduce the pain _again_. (Having an alternative definitely helps in the meantime.)

kgwgk 5 hours ago||||
Only if you take them all at once.
stubish 3 hours ago|||
Also dementia
vasco 8 hours ago|||
Or 10 slightly larger ones

edit: https://www.24pharma.nl/paracetamol-eg-1000mg-120-tabletten

petesergeant 8 hours ago||
I’ve pretty much only ever seen them sold at 500mg; are you regularly seeing them where you are sold in 1g form?
SpaceNugget 3 hours ago|||
The .nl indicates the netherlands. Many people in the netherlands vent/joke about how the doctors here only ever tell you to take paracetamol and come back in two weeks if it's still a problem (recursive solution).

However the last time I went to my GP she scoffed at me taking the maximum and suggested I take literally double the maximum recommended dose 4-5 times a day which totaled I think 2.5x the daily maximum on the package. I am very much a "believer" in science and reasonable medical authority but this experience sowed the seeds of doubt, because from what I have always heard, that can actually kill you or cause permanent liver issues. I was also taking diclofenac simultaenously, and when I told her how many mg, she asked "where can you even buy such small doses, that's what I would give a small child" =/

nbernard 7 hours ago||||
They are common in France, but not in such packages: There are restrictions that prevent you from buying more than than 8g/day (theoretically at least, I don't believe they are strictly applied in practice).
Dries007 4 hours ago||||
The linked size is also quite common in Belgium.
oblio 3 hours ago|||
In Europe for sure they're also sold in 1g dosing. I think the packages don't contain lots of pills, though. Definitely not US style buckets of pills.
hannob 4 hours ago||||
Buy a pack of 20x500mg (just checked, common size in Germany), take 2-3 every half hour for a while.

Sure, that's extreme. But if you're unaware of the risks, you feel sick, and you believe it's helping you.

I mean, people aren't killing themselves in masses with it, but it happens every now and then. Easily imaginable that one in a few million people will have enough tendency to take more pills and is unaware of the overdose danger.

colechristensen 7 hours ago|||
Taking too much acetaminophen is bad for you but 10g is 20 extra strength pills and that much isn't likely at all to kill you but damage your organs is quite possible. Reading this might make someone in a bad place think that much will do the job and it won't. Tylenol poisoning's most likely outcome is permanent organ damage and pain, don't try it.
Natsu 7 hours ago|||
I've heard it suggested that acetaminophen just come with a small dose of NAC alongside it to make it safer. I guess this would require a lot of regulatory work to approve, but given that 500 people a year OD, it seems like a thing we should at least consider.

Meanwhile, it's funny that it seems like acetaminophen should safer in more scenarios, but the other has a lot of overdoses with typical use, I guess that's why there's a gap between the two, because ODs are apparently a lot more common or at least more legible than problems caused by the other drug.

Nursie 8 hours ago|||
When was this changed?

I arrived in Aus in 2021 and was amazed to be able to buy a pack of 40+, coming from the UK where the limit had been in place for some years.

brainwad 6 hours ago|||
You can still buy 100 packs, they are just behind the counter at chemists. TBH it's a rather stupid restriction - do they think people only ever own 1 packet of paracetamol at a time? In my household we have at least half a dozen, including a 100-pack from Oz and a 500-pack from America.
Nursie 4 hours ago||
Oh right - that's probably what we did, buy a big pack from behind the counter.

I don't think you can even do that in the UK.

Yeah we usually have a few packs hanging around, and I get the 'it seems stupid' thing, but sometimes just adding a tiny bit of friction when someone's trying to kill themselves might save a life. I dunno, I hope that's shown in the evidence anyway. Otherwise it's just pointless like the whole pseudoephedrine song and dance, which has inconvenienced anyone looking for a decongestant while doing sweet FA to the availability of meth.

brainwad 2 hours ago|||
> Oh right - that's probably what we did, buy a big pack from behind the counter.

No, when you visited they were still on the shelf. They only put them behind the counter in 2025.

> sometimes just adding a tiny bit of friction when someone's trying to kill themselves might save a life

I'm philosophically not for making suicide harder. If someone wants to die, that's their right. And practically, while you might be able to show a stat-sig decrease in paracetamol poisoning, I'd expect the suicides to largely just move to other methods.

zimpenfish 4 hours ago|||
> I hope that's shown in the evidence anyway

tl;dr: Yes

Paraphrasing from [0], after September 1998 when the restriction was introduced, "The annual number of deaths from paracetamol poisoning decreased by 21% [...] the number from salicylates decreased by 48% [...] Liver transplant rates after paracetamol poisoning decreased by 66% [...] The rate of non-fatal self poisoning with paracetamol in any form decreased by 11%"

See also [1]: "in the 11 years following the legislation there were an estimated 765 fewer suicide and open verdict deaths from paracetamol poisoning, which represented a reduction of 43% [...] This reduction was largely unaltered after controlling for a downward trend in deaths involving other methods of poisoning and also suicides by all methods."

[0] https://pmc.ncbi.nlm.nih.gov/articles/PMC31616/

[1] https://www.psych.ox.ac.uk/research/research-groups/csr/rese...

pugio 8 hours ago|||
Jan 2025: https://www.psa.org.au/changes-to-paracetamol-scheduling-wil...

It's the usual public health balancing act of help vs harm.

tokyobreakfast 8 hours ago||
You can still die if you take your idiot-proof Aussie blister packs with alcohol. So it's more an inefficient use of cabinet space.

You can overdose on water too, they haven't banned 5-gallon jugs (yet).

adithyareddy 8 hours ago|||
Yes, and you can still die in a car crash if you're wearing your seatbelt, and wearing a helmet on your motorcycle won't save you from a head-on with a truck, and you can still drown in a pool with a lifeguard, and you can still die in a burning building with smoke detectors.

Harm reduction is about shifting probability distributions, not guaranteeing outcomes. Kids can still get into pill bottles with childproof medication caps, but accidental ingestion of aspirin by children reduced by 40-55% after they were mandated. [0]

[0]: https://pubmed.ncbi.nlm.nih.gov/440889/

epcoa 7 hours ago||||
No. Ethanol and tylenol compete for CYP2E1 that produces toxic NAPQI, so no, acute alcohol intoxication has a protective effect at least where it comes to tylenol toxicity.
robocat 3 hours ago|||
No.

Alcohol and Acetominophen/paracetamol should not be mixed.

  When alcohol enters the picture, it increases the activity of CYP2E1, so the body produces more of the NAPQI toxin. Alcohol also decreases glutathione production, the body’s natural defense mechanism, meaning NAPQI is more likely to build up in the liver in dangerous concentrations.
https://www.medicalnewstoday.com/articles/322813

Sorry, crappy link. If you don't like it, it is easy to search for a better one.

Flashtoo 1 hour ago||
There is a danger in chronic abuse resulting in upregulation. Mixing the two at once is no problem for the liver, which is also why patient information leaflets for paracetamol do not contain a warning to avoid alcohol, only about chronic alcohol abuse.

Your crappy source is vague in what consumption pattern constitutes a risk and actually cites a better source that supports the idea that acute alcohol consumption reduces paracetamol toxicity. https://www.biorxiv.org/content/10.1101/2020.07.07.191916v1....

That's a mathematical model, but this relationship between the two is what I was taught in medical school and it is still supported by the science. There's plenty of other sources, I just picked that one because your article cites it. Just search for "paracetamol ethanol" on Google Scholar.

Flashtoo 4 hours ago|||
This is correct.
perching_aix 2 hours ago|||
s/idiot-proof/idiot-resistant/g

Also applies to most similar phrases ending in -proof. Should be eye-opening.

topham 6 hours ago||
The right tool for the right job. When it comes to medication, in the right dosage.

I'm aware of acetaminophen's down sides, and yet recently I was taking it combined with 2 other medications at the time.

Why? Because all three medications are recommended for dealing with the issue I had. (Alone and in combination)

The moment it wasn't helping further? Done.

There is this broken idea, particularly apparent in North America, but in western society that more is better for many things. It's not.

More pain killers don't do anything if they max out the relief they can give you, overloading their mechanism doesn't reduce anything, but taxing your liver or your kidneys.

All medications are potentially toxic, your body wants to dispose of them. In appropriate dosages they will benefit you, but more isn't inherently better.

Even water can kill you in sufficient quantity.

We do the same with diet; where someone declares one ingredient in a meal healthier than another; it isn't. A single ingredient isn't better or worse for you in a meal. Your diet however can be good or bad; over time that matters.

wouldbecouldbe 5 hours ago|
Try dealing with a herniated disc, more ibu is definitely better. Too little wont do anything, proper dose and you feel healed
shankr 4 hours ago|||
Yeah can confirm. I try to keep it low but then pain lingers for days and cumulatively over the days most probably I took as much as I should have taken in stating few days already.
wouldbecouldbe 4 hours ago||
yeah tried to reserve ibu for sleep and during the day walking as much as possible. I know not everyone feels better while walking, luckily I did.
e40 5 hours ago|||
Spine issues are the single thing that pish me to ibuprofen or naproxen over acetaminophen. The latter does nothing for my issues.
wouldbecouldbe 4 hours ago||
yeah, its the inflammation going down that reliefs the nerve.

Took me 3 months, out of 2 i wasn't able to sit. Luckily I could walk and that give me great relief. So walked for hours.

Keeping the habit, will mostly being coding from my phone & walking from now on.

e40 3 hours ago||
Really nice you found a workaround. I am constantly trying different ways to alleviate my pain without drugs.
antirez 3 hours ago||
In the article it is mentioned but it is worth stressing that N-acetylcysteine is a trivially available antidote for paracetamol overdose (and you may have it at home without knowing, Fluimucil, Mucomyst, NAC or alike).

Also: in Europe everybody normally takes paracetamol and not FANS as a first reach to minimize adverse effects. So this article looks like very US centric. AFAIK liver failure because of paracetamol in Europe is very rare. So here there could be cultural issues at play (medical culture of what is prescribed, and the fact that Europeans in general take lower dosages of everything).

EDIT: trick, if you very rarely take paracetamol and other pain medications, the next time try to take just 250mg. It works for most people, no need to take 750 or even 1 gram of paracetamol. 500 works for almost everybody, 250 for many folks.

justinc8687 7 hours ago||
I lived with an ICU nurse for years and one of the things he emphasized was the risk of acetaminophen overdose. He's more than once treated the liver failure (and death) from it and by his words, it's one of the worse ways to go.

The positive of it is it got me in the habit of logging whenever I take it, either in a note on my phone or just a sheet of paper I place on my dresser under the bottle. This helps make sure I stay under the 3-4g/d limit.

Last year I was diagnosed with a rare headache disease (NDPH). We thought it completely came out of nowhere, but I had logs in my phone recording headaches and acetaminophen use intermittently from a few weeks prior. This proved useful in the diagnosis.

Moral of the story: log when you take it to avoid overdosing. Combine that with some basic symptom logging (like 1 line, 10 words or less). You never know when that might be useful for your doctors later on.

jmalicki 2 hours ago||
In my wilderness first responder class they emphasized taking a cocktail of ibuprofen and acetaminophen - both are effective pain relievers, each with different dangerous side effects.

The benefits stack, the side effects don't.

So if you are going to be loading up on higher doses of pain relief, take half acetaminophen and half ibuprofen.

justinc8687 7 hours ago|||
P.S. like someone mentioned in a comment below happened to them, be careful with NSAIDs over the long term. Until recently I took them daily for better part of 3 years. I was recently diagnosed with chronic kidney disease. Can't definitively say causation, but they definitely contributed. They're fine for short term use but can really f$%# you up with long term, daily use.
vidarh 6 hours ago||
It is absolutely valid to warn about long term use, and NSAIDs in particular (I was lucky and had a gastroscopy before they'd done any serious damage, but they found significant erosion of my stomach lining due to NSAIDs), but acetaminophen/paracetamol isn't an NSAID (ibuprofen and aspirin, for example, are)
justinc8687 1 hour ago||
To be clear, it was nabumetone, celecoxib or meloxicam (at various times, not overlapping) for me.
marcogarces 4 hours ago|||
In mozambique i was committed to the hospital with my liver failing after spending two weeks taking acetaminophen daily because everyone at work got sick and someone had to keep the business up (it was a bank, our IT department was very specific and only 6 people knew that job and everyone got extremely hill). After two weeks, i finally went to the hospital and I couldn't leave; spent the next two weeks fighting for my life and at some point I was told I was not going to make it. All due a simple over the counter medicine... crazy. This was 2016. To this day I still get extremely tired if I take it, so I have to choose it carefully when to take it.
molf 4 hours ago||
That sounds terrible! Glad you made it out alive and hopefully recovered well! Out of curiosity: how much did you take per day?
e40 5 hours ago|||
Agreed!! Here’s my trick: take 1g and set an alarm for +6 hours. If I don’t need it, fine. If I do, repeat.
isoprophlex 7 hours ago||
I'm not disagreeing with you or trying to be disagreeable, but how do people accidentally exceed 3-4 grams daily? That's 6-8 pills!
justinc8687 59 minutes ago|||
You are running a high fever or have a massive headache, so know you are going to max out at 4g/day. At that point, it's kind of hard to keep track of the clock.

"My head is pounding. Shit...did I take this at 3PM or 5PM? I know I took it and then fell asleep, but I can't remember when. It is now 9PM, can I take more or not?"

brainwad 6 hours ago||||
It often happens when people take the max dose of straight paracetamol, and then also take another drug that has paracetamol in it without knowing that (e.g. a codeine/paracetamol or ibuprofen/paracetamol combination).
skrebbel 6 hours ago||||
People who are in a lot of pain and don’t know the risks.

Rationalizations like “they probably put the limit way lower than the real limit so idiots don’t OD themselves, so I can safely take a bit more” become very attractive when you’re in a lot of pain.

jeroenhd 4 hours ago|||
To be fair, the "real" limit depends on how lucky you are with your body's makeup. The safe limit is below that limit.

I know people with permanent pain due to medical conditions who have been given a doctor's approval to exceed the limits printed on the packaging (after having previously been monitored). You can exceed the limit on the packaging by one or two pills.

A bit more is often not deadly, but it's very easy to take more than a bit. When I had a messed up mouth for several days, I took the maximum doses and set timers to help me regulate the dosage throughout the day, but I sure wished I could've taken more at that time.

isoprophlex 5 hours ago|||
Okay that's right, if you just keep upping the dose because you're still in pain it might be easy to just slam a few every 4 hours

From personal experience if i have a headache I'll take 1000 mg all at once; it either works right away or it doesnt and I stop bothering until I've had a good nights rest...

kakacik 5 hours ago||
Imagine if that rest will do nothing for that headache and its there morning day and night. Or some injury-related pain which simply can't be downtuned. Plus when old, half of the body aches, all old injuries and general deterioration.

I had only very brief experiences with longer intense pain but it made my mind into pudding and desperate knot of how-to-stop-this-at-all-costs. Normal life is not possible and sanity is not granted.

justinc8687 56 minutes ago||
Yah...I've been there for 6 months now with a constant headache. The first month or so, I was taking 3.5g/day consistently. At hour 4.5 - 5, it would wear off. If it wasn't for my tracking, I probably would have ODed.
vidarh 6 hours ago||||
If you take 2 on average every 4 hours, you're at 12. If you're feverish or otherwise feeling ill enough and sleep deprived enough, forgetting when you took them last is easy. Personally I write down the time I took the last one.
ufo 1 hour ago||||
It can also happen if the person has some disease that affects the liver, which in turns lowers how much of the drug they can take.
mordae 5 hours ago|||
Hot Coldrex (Tylenol) + Pills. People don't read.
TrackerFF 2 hours ago||
Only twice have I ever used Acetaminophen close to the max daily limit, and those were both when I was experiencing a raging tooth infection. I'd pop 2x500 mg paracetamol 4 times a day, which helped just enough to get through the day. The tooth infections were so severe that the dentist had to put anesthesia directly into the root / nerve, multiple times - felt like a lightning strike each time. One of these times I'd put the pain level at a 9 out of 10. I'm just going to assume that 10 out of 10 pain is when you basically consider ending it all, purely in the heat of the moment.

Having gout, I've also had some pretty severe bouts where the pain level has been in the 8/10 range. Unfortunately nether paracet or ibuprofen worked.

In any case, when I see regular people eating these painkillers as candy, I'm starting to wonder what pain levels they are experiencing. I'm generally very cautious of using this stuff.

vanderZwan 2 hours ago|
Pain is weird. It's extremely subjective, not only between people but also within your own body. Paraphrasing something Paul Rozin mentioned in a paper on so-called benign masochism: people can learn to enjoy eating the most extremely spicy food, but even those people will still scream out in pain you rub the ghost pepper they're eating in their eyes. Pain sensation is therefore localized and contextual.

So we should not be too quick to dismiss the pain of others.

As far as 10/10 pain goes, I've heard cluster headaches can get so bad it has driven people to suicide during an episode.

seemaze 10 hours ago||
I grew up with the understanding that acetaminophen was the safe choice for fever or aches, and ibuprofen what the more potent compound for inflammation and severe pain. I recall casual anecdotes that "my doctor said 1.5x or 2x ibuprofen dose is ok when warranted" to address major incursions.

I've never once thought about taking more than the recommended dosage of acetaminophen, largely because I had no expectation that it would provide additional benefit..

In reality, I try to consume 1/2 doses of anything or nothing at all, unless it's a serious medical treatment being administered by a professional.

ghosty141 6 hours ago||
> largely because I had no expectation that it would provide additional benefit..

An interesting thing with ibuprofen is that at the regular dose of 400mg it inhibits pain but if you take 1600mg it doesn't inhibit much more pain than the 400mg dose, but the inflammatory effect does increase significantly. A lot of people don't know that and take too much thinking it scales linearly.

mordae 5 hours ago||
Some know that you can combine ibuprofen with paracetamol to get extra pain suppression.

And when you want to be gentle, you alternate between them.

7bit 6 hours ago|||
If your doctor recommends to take a specific dose, take the specific dose. Don't half it. Taking half of stuff can also cause further damage. Like with antibiotics, where it can lead to bacteria becoming resistant.

So don't be the "smarter" person. Do as your doctor says and if you have doubts, consult another doctor before just doing what you think is safe, but actually isn't.

nerptastic 2 hours ago|||
Is this not the case for OTC drugs? Specifically, the two mentioned in the article. I rarely take either of them, but if my doctor tells me to take 1 ibuprofen every 6 hours or so, if I halve that am I actually doing more damage?
gucci-on-fleek 2 hours ago||
> Is this not the case for OTC drugs?

In general, taking a lower dose than recommended can cause problems, but aside from antibiotics, the problems are probably going to be from insufficiently treating the underlying condition, rather than the medication itself. Most OTC drugs give a single recommended dosage for all adults, so some people will necessarily get a lower "effective" dose than others (eg. a 200 lb man compared to a 90 lb woman).

> Specifically, the two mentioned in the article. [...] but if my doctor tells me to take 1 ibuprofen every 6 hours or so, if I halve that am I actually doing more damage?

With the caveat that I'm not a doctor, you should be fine: the only effect of acetaminophen is pain suppression, so if the pain is tolerable, then you should be fine. Ibuprofen has some anti-inflammatory effects that could be important here, but realistically, if the anti-inflammatory effects are the primary reason for the prescription, then your doctor is more likely to prescribe naproxen or celecoxib.

But if this ever comes up for you again, probably the best solution would be to tell your doctor/pharmacist "I have a high pain tolerance, would it be okay if I take less?", since in my experience, medical practitioners are generally pretty happy to hear when you want to take less drugs.

mordae 5 hours ago|||
This. But also don't trust doctors and always remember Richard Feynman's Wife. Science is hard.
petesergeant 8 hours ago||
I think most overdoses happen as a result of someone trying to hurt themselves, but I’ve also previously been in sufficient pain (always dental) that I’m counting the minutes down to when I can take more painkillers, so it’s easy to see how you could take double the expected dosage.
kgwgk 7 hours ago|||
It’s also easy to imagine that you may be in a state of confusion and lose track of time and/or the count of doses.
ZoomZoomZoom 34 minutes ago||
Considering its ubiquitous and regular consumption in general population, doesn't alcohol shift the balance in favour of ibuprofen?

Also, possible blood clotting or stomach issues sound scary, but Aspirin has similar (opposite) issues. Pharmacists regularly push its combinations with Acetominophen (which has, of course, synergetic bonuses, but is not the reason) under multitude of brands with a hefty premium when people ask for either one. So in many situations you need to consider the added risks from Aspirin too.

Ideally, I'd like to have an optimized strategies of using all three of the aforementioned substances for common situations. Like, is rotating ibuprofen/acetominophen during the day safer than consuming just one?

glimshe 59 minutes ago||
My US doctors almost never recommended Ibuprofen over Acetaminophen for mild pain. In fact, I don't remember them ever recommending Ibuprofen for anything while I hear about Tylenol pretty often.

I've had doctors prescribing short runs of opioids (2 weeks for surgery recovery) but they always said "try Tylenol first and if the pain is too much you can fill the prescription". I liked having the option but never really used it up to this point.

oliyoung 5 hours ago|
It's a very strange cultural thing too, Australians (and I presume other Commonwealth countries) default to paracetamol (acetaminophen) before ibuprofen

Paracetemol has always been seen as first thing you'd take for pain relief, and you'd "step up" ibuprofen as an escalation, but that might more to do with marketing of Panadol (paracetemol) vs Nurofen (ibuprofen).

We'd look on at the US where you were taking Advil like candy in confusion.

One great thing you learn as a parent, you can alternate acetaminophen and ibuprofen. Both of them are recommended every four hours, but you can stagger one by two hours to maintain consistency of pain-relief taking ibuprofen then paracetemol two hours later

unmole 5 hours ago||
> I presume other Commonwealth countries) default to paracetamol (acetaminophen) before ibuprofen

Can confirm this is true in India.

Paracetamol is widely used. Paracetamol + Ibuprofen is more common than Ibuprofen by itself.

niek_pas 4 hours ago||
> Australians (and I presume other Commonwealth countries) default to paracetamol

The same is the case in the Netherlands.

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