Dutasteride

Dutasteride is a 5-Alpha Reductase Inhibitor, by inhibiting this process it lowers the rate of conversion of Testosterone into DHT, which is widely believed to be a primary contributor to Androgenic Alopecia. Dutasteride is not a complete anti-androgen, it does not reduce Testosterone and will infact increase it, it merely reduces DHT. When compared to Finasteride, Dutasteride offers similar efficacy while showing an equal or lower rate of adverse events.

Though the exact mechanism is unknown 5-Alpha Reductase Inhibitors as a class are associated with significant rates of depression and should be taken with great care.