There are several threads about this, as referenced above. There's also The Formulary Song, which I wrote a quarter of a century ago. It's interesting to see how many of the drugs mentioned are no longer in use. (There's a line missing: line 3 of verse 3 should be "And Miltown, Motrin, Medrol, Maalox, Myleran and Miradon" -- note that back then Motrin was available by prescription only!)

This animated version of "The Elements" is absolutely wonderful--and it uses Lehrer's original version. Check it out!

Aloha,
Mark