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E_Nygma says...

See bamdrew's explanation on paracetamol; it's just the trade name of acetaminophen in certain parts of the world, as tylenol is the tradename in the US. naproxen is another NSAID (non-steroidal anti-inflammatory drug) like ibruprofen, and so has a very similar mechanism of action to it. It too is a cox-1 and cox-2 inhibitor, and other drugs exist which are more selective to one or the other, but most have been associated with severe although rare side effects (vioxx was a cox-2 selective inhibitor)

>> ^lucky760:

Fascinating and something I've always wanted to know.
Now how do acetaminophen and naproxen sodium work?

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