 1 mg per day finasteride is effective for male androgenetic alopecia and has a similar efficacy to 5 mg per day, 1% solution and topical finasteride. However, it may cause sexual side effects such as erectile dysfunction and decreased libido, which can lead to depression in some patients. It is important for patients to be educated about the possible short and long-term side effects of finasteride. This article was authored by A.K. Gupta, M. Venkataraman, M. Talapta, and others.