I did a quick dig into the wikipedia article, and it has the roots for the names as follows: Both acetaminophen and paracetamol come from a chemical name for

I did a quick dig into the wikipedia article, and it has the roots for the names as follows: Both acetaminophen and paracetamol come from a chemical name for the compound: para-acetylaminophenol and para-acetylaminophenol. No real reason for why one took off in one area, versus the other, just what happened to stick! https://en.wikipedia.org/wiki/Paracetamol#History https://en.wikipedia.org/wiki/Paracetamol#History