toxicity

Dr. Cox: Did you actually just page me to find out how much Tylenol to give to Mrs. Lendsner?

J.D.: I was worried that it could exacerbate the patient's... 

Dr. Cox: It's regular strength Tylenol. Here's what-chya do: Get her to open her mouth, take a handful, and throw it at her. Whatever sticks, that's the correct dosage.

Of Dr. Cox's many rants on the comedy show Scrubs, this is definitely one of the funnier and more memorable1. However, it isn't quite accurate.

Tylenol (a.k.a. acetaminophen or paracetamol2), unbeknownst to many, is actually a fairly toxic drug. Its ubiquity has lulled us into a false sense of security about its safety. But as our resident chemist Dr. Josh Bloom...