There are others - recently the drug for hair loss, Propecia, was mentioned as a prevention for prostate cancer, sort of a reverse of the Viagra story, going from cosmetic to internal medicine. Now there is a glaucoma treatment with a curious side effect - it makes eyelashes grow thick and dark. Which is reminiscent of the first marketable side effect of which I was aware - Minoxidil, a blood pressure drug, had the nasty side effect of making patients grow hair in places both good and bad. But applied topically to specific areas it caused hair growth in just that area. And what do you get? Rogaine.
OK - so they have created markets from discontent, usually over appearance or performance. Is that really bad? Doesn't everyone have the right to be pain-free, have a full head of hair, an erection and great lashes? This is America, after all.