The Ultimate Vampire Resource and Directory

In the early 1990s, Pfizer was testing out a drug called UK92480, intended to treat patients with angina, a common precursor to heart attacks, involving the constriction of blood vessels that supply the heart. The company was hoping the drug would relax the blood vessels. Mm, it failed in that regard, but test subjects reported some fascinating developments below the belt, and so became the little blue pill known as Viagra, a side effect of which is—wait for it—heart attacks.