Been wanting to post this for weeks, but as I’m feeling just crappy enough to justify not studying, now’s the perfect time.

I use Lippincott’s Illustratred Pharmacology for a study tool-it’s an excellent book, and really well organized. I was flipping through the pages a couple weeks ago and came across sildenafil-ie: Viagra -and found what is, quite possibly, the best illustration of a drug mechanism ever :

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