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human
ELI5: Why do America and the UK not use the same "main" painkiller? Aspirin vs Paracetamol

I'm mainly basing this on american movies as I've never been there but why do the UK and America not use the same main painkiller? Surely one is more effective or generally safer with fewer side effects?

Is this due to drug companies sales?
gpt
In the US (and Canada)  Paracetamol is called Acetaminophen, which goes by the brand name Tylenol. Tylenol is in fact one of the top pain killers used. In addition to Acetaminophen, Ibuprofen (Advil), and Acetilsalicylic Acid (Aspirin) are probably the most common painkillers in North America.