PSA:
Acetaminophen/paracetamol has a hard stop upper dose limit, above which it becomes extremely toxic.
That limit is 4g (8 “extra strength” (500mg) tablets) in 24 hours (about 2 tablets every 6 hours).
A single dose of 22 extra strength tablets can kill you.
Taking 12 or more tablets per day for more than a week can also kill you (this is about 3 tablets every 6 hours).
Symptoms of overdose take up to 24 hours to manifest, and are fairly difficult to distinguish from other problems. They include abdominal pain (especially right upper quadrant), nausea, malaise, and confusion.
The antidote (n-acetylcystine) must be given within 8hours of ingestion in order to be useful.
After 10 hours the only thing that will work is a liver transplant.
You might think “why would I ever accidentally take so much?”
Well, acetaminophen is in almost everything in the cold/flu/pain aisle. Migraine combos like Excedrin, cold and flu combos like NyQuil, basically anything that says “non-aspirin pain relief”, and anything that’s branded as a fever reducer. It’s all probably acetaminophen/paracetamol.
So the goal of this post is to get you to read the labels on your medications. Because taking taking Tylenol and NyQuil together for a week (like you might if you had the flu) could kill you.
Please don't forget this shit, after it happened to a family member, he died 8 years later because of the continuing health complications even though he survived the initial overdose
You’re also not supposed to take more than a gram at a time. The only thing I’ve ever OD’d on was acetaminophen because I knew about this limit and was optimizing nyquil and an antihistamine/tylenol pill. I was sick and did the math wrong and realized I took slightly more than I should have at 1075mg. I freaked out and called poison control and they were like “okay you’ll be fine, just don’t take any for a couple days.”
