The recommended dosage of Dutasteride / Avodart for treating Male Pattern Baldness is 2.5 mg per day. This amount has been demonstrated to block close to 100 percent of DHT that is responsible for hair loss. In most men, the medication will increase the number of scalp hairs and delay additional hair loss. Dutasteride / Avodart is not safe for women or children. As well, the capsules should not be handled by women who are pregnant or who are planning to become pregnant because of the potential risk of birth defects. The side effects of Dutasteride / Avodart are usually mild and disappear while on the medication. Impotence and decreased libido are the most common complaints.