Hello and welcome. The effectiveness of these medicines is still theme of debates, and this is helpful in minority of patients unfortunately. There are also some unpleasant sexual side effects. So you and your doctor should consider cost-benefit of such treatment in young man like you, which is usually very long. Also, it should be confirmed that this is androgenic alopecia before tretament starts. Hair fall can cause cosmetic problem, but if this doesnt affect you emotionally you shouldnt treat this with anything. WIsh you good health.