High toxins level cause damage to liver.
Antitoxin stops that damage, and heals liver if it's not too damaged (over 10 damage)
Alcohol causes liver damage and some toxic damage, at the stage where you pass out.
Painkillers stop regular pain messages too, not only custom ones.
Bicaridine stops internal wounds from growing bigger over time.
Does not stop bleeding itself though.
Typo
Merge pull request #3420 from comma/medtweaks

Liver's delight