Propecia is an FDA-approved prescription medication taken once a day and is proven to treat male pattern hair loss on the vertex (top of head) and anterior mid-scalp area. Propecia works to block the hormone DHT, or dihydrotestosterone, which is a key factor in the shrinking of hair follicles in those suffering from male pattern hair loss.
Propecia is not safe for women of child-bearing age, and pregnant women should not even handle broken or crushed Propecia medication because of the potential for birth defects in male babies.
“Nine out of ten men improved or maintained hair with Propecia based on a photographic assessment by an expert panel of dermatologists following 5 years of clinical studies. Most men in the clinical studies saw results 3 to 12 months after starting Propecia. If Propecia has not worked for you in twelve months, further treatment is unlikely to be of benefit.”
Learn more about Propecia: http://www.htandrc.com/procedures/propecia-and-rogaine/