here is some q&a
Q: I am an avid reader of Max Sports & Fitness magazine, but have noticed that there is a topic little attention has been paid to. I know myself and several people at the gym take Propecia for obvious reasons, don’t want to loose our hair. Our concern is that Propecia suppresses dihydrotestosterone in the body. As far as I’m aware, testosterone is an anabolic, does taking Propecia hinder muscle growth?
A:"Yes, Propecia does prevent DHT conversion in the muscles," advises Dr. Abraham Kryger, creator of the prescription brand Testocreme? topical testosterone and a noted lecturer in the field. "Propecia or finasteride is an enzyme blocking agent," says the Monterey, California physician and author of an upcoming book on the topic. "It prevents the conversion of testosterone to dihydrotestosterone or DHT, which plays a crucial role in both sex drive and the growth of muscle tissue. Since DHT is responsible for muscle-building at the receptor level, it does not help to have testosterone available if it cannot be used. Many men have plenty of testosterone but cannot build muscle because it is not available. The reason sex drive is suppressed with Propecia is the same...... less DHT." Though Propecia has prevented millions from hair loss, research finds that Propecia does prevent testosterone conversion to muscle and may even inhibit sex drive.
Source: MM Sports Nutrition Research Team; Dr. Abraham Kryge