[seamyb88]

Even for "some innocent stuff like Tylenol", as the original comment puts it, you do not want to be taking 5x the dose. This is a very harmful drug in (not very) large quantities.

I know of somebody whose boyfriend ended things with her, she took a load of tylenol to end her life, but the doctors managed to resuscitate her. When she came to, she said to her mother "I'm so glad I didn't kill myself over that bastard". A week later she died from liver failure.

[TheOtherHobbes]

That's a standard thing with Tylenol/Paracetamol. You can recover from the initial overdose, but then the metabolites build up in your liver over the next few days and trash it beyond any hope of repair.

At that point it's either a transplant or death.

The scary thing is that it's incredibly easy to overdose by accident. For some people the lethal dose is less than twice the recommended dose, and if you're in a lot of pain - e.g. from a dental abscess - you can easily overdo it.

[nullc]

Tylenol is most of the most deadly (in terms of effective dose vs harmful dose) of anything commonly used.