Why Finasteride only up to 41 years?
From the age of 42, the stage of androgenetic alopecia is usually so advanced that taking finasteride usually has little effect. Due to the lack of active hair follicles on the scalp, the active ingredient can only show a few improvements.
However, reports of side effects have been increasing recently. Patients complain of depression up to suicidal thoughts, erectile dysfunction, decreased libido, sleep disturbances.
Finasteride slows down the effect of the sex hormone testosterone via an enzyme.!!