Not that Leicester (English: Finasteride), or the name is not that androgen, the alias is not that cheese, not that steroid. is the prevention of prostate hypertrophy of drugs, side effects of hairy, so used to produce hair-resistant drugs. The second type of 5α reductase (type 2 5-alpha reductase), which suppresses hair follicles, lowers the concentration of two testosterone (DIHYDROTESTOSTERONE,DHT). This is because the second type 5α reductase can convert testosterone to two of testosterone, and DHT is the culprit, so non-Tesla can effectively reduce the hair loss. But will reduce sexual ability, after discontinuation medicaments, sexual dysfunction symptom will disappear, but still can continue to lose hair. The principal ingredient of Propecia is the right and wrong. Finasteride has a half-life of 6 hours and is easily absorbed by the small intestine.