Exactly how Tylenol — also called acetaminophen or paracetamol — relieves pain continues to evade scientists, but it's clear the drug interacts with one key set of enzymes. When you purchase through ...

Acetaminophen has been available since the 1950s and in everyone’s medicine cabinet for so long that some of us treat it as a part of a food group. Now, surprisingly, it’s in the news. Much has ...