A brand name of the drug finasteride. It is marketed for treating male pattern-baldness. Due to its expense, many men opt for the cheaper version of the drug Proscar.
It has been clinically proven as being more effective than minoxidil – another men’s hair-loss drug.
From Pro- (Latin meaning “for”) and alo-PECIA (alopecia meaning hair-loss)
I seem to be developing male pattern-baldness, I should start using Propecia.