Finasteride does not generally cause beard growth. Finasteride is used in regular doses for the treatment of benign prostatic hyperplasia, among other things, and in small doses for the treatment of androgenetic alopecia in men, among other things. The drug is a 5-alpha reductase inhibitor that inhibits the conversion of peripheral testosterone to dihydrotestosterone, which maintains normal secondary sexual characteristics and normal male libido. Reduced levels of dihydrotestosterone in the blood after finasteride use may result in adverse effects such as sexual dysfunction, decreased libido, breast tenderness or enlargement, and skin rashes, which usually diminish over time. Therefore, the use of Finasteride does not result in a larger beard. Finasteride is contraindicated in patients who are allergic to the product, as well as in women, pregnant women, and children. It is recommended that patients with the need for medication, under the guidance of a doctor to regulate the use of finasteride, to avoid unauthorized use of drugs causing serious adverse consequences.