acetaminophen

A fever reducing painkiller known for it's liver toxicity when taken in semi-large doses, also known as APAP. It's found in pretty much any drug that's popular to get high so they add APAP to prevent abuse. Common drugs include Vicodin/Lortab 5-500mg APAP/Hydrocodone and Dextromethorphan hydrobromide cough syrup formulas. Avoid it if you can.