So today I learnt that paracetamol is also called acetaminophen. I'd always assumed Tylenol in the US was functionally equivalent to Panadol in Australia - ie, a brand name used in place of a drug name referring to the most common form of over-the-counter pain relief.

When I started reading this article I was surprised to learn Tylenol had a different active ingredient, and almost tuned out to the warning because I've never encountered acetaminophen in the wild. But my linguistic assumption compelled me search further, and uncover the connection.