Propecia main purpose is to stop hair loss and maintain the hair covering to leave. Therefore, young men who want to control the early stages of hair loss. Men of all ages use it combined with minoxidil to achieve a hair loss strategy, stop hair loss and encourage new growth point. Propecia, interfere with the process of androgenetic alopecia, this process is usually as follows: 1. The high level of 5-α-reductase enzyme is known to occur in the cells of the hair follicle. 2. This enzyme conversion of testosterone to dihydrotestosterone. 3. DHT resulting in the miniaturization of powerful terminal hairs. 4. This results in a delicate, soft hairs, provide limited scalp coverage. 5. Permanently lost gradually shortened until the stage of the hair growth. Subsequent studies showed mg daily dose of the same drug after two years of treatment, 83% of male hair loss is sufficient control. Since 1998, this version has been marketed under the brand name Propecia, it is still the only FDA-approved prescription drugs, specialized in treating hair loss. The approval applies only to men's hair loss, finasteride presents to unborn male fetuses dangerous. Therefore, women of childbearing age should consult with their doctor before considering the use of this drug. Finasteride was initially sold in the 5 mg drug under the name Proscar to treat prostate conditions. This is known to inhibit the formation of DHT, the main factors for prostate cancer, and male pattern baldness. Propecia inhibits the formation of DHT, and reduce levels of DHT in a period of several months, enough to minimize its hair follicles. As with any drug, finasteride can cause side effects, a small number of users. FDA trials reported that 2% of the different incidence of side effects, but these are often used as the main body, and to alleviate drug regulator within months. While on the Internet is easy to get Propecia or cheaper generic versions, it is strongly recommended that you consult your doctor, at least in the first instance.