Finasteride is a medication that blocks the production of dihydrotestosterone (DHT), a hormone that plays a significant role in male pattern hair loss and benign prostatic hyperplasia (BPH). It works by inhibiting the enzyme 5-alpha-reductase, which converts testosterone to DHT. Lowering DHT levels can help slow or reverse hair loss in men with male pattern baldness and reduce the size of the prostate gland in men with BPH.
How Finasteride Affects Hair Growth
By reducing DHT, finasteride allows hair follicles to remain active longer, potentially promoting hair regrowth and preventing further thinning. It’s important to note that results vary and are not guaranteed for all individuals. Hair growth typically begins to show within three to six months of consistent use, with optimal results often seen after one year of treatment. Stopping treatment may lead to hair loss resuming.
Finasteride and BPH
In men with BPH, finasteride shrinks the prostate gland, relieving symptoms such as frequent urination, weak urine stream, and urinary urgency. This reduction in prostate size typically occurs over several months of continuous use. Similar to its effect on hair growth, results are not uniform, and consistent use is necessary to maintain benefits.
