Finasteride
5-Alpha Reductase Inhibitor | DHT Blocker for Hair Loss & BPH
Finasteride is an FDA-approved 5-alpha reductase inhibitor that blocks the conversion of testosterone to dihydrotestosterone (DHT), the primary androgen responsible for androgenetic alopecia (male pattern hair loss) and benign prostatic hyperplasia (BPH). At 1mg daily, it reduces scalp DHT levels by approximately 66%, slowing or halting hair loss in roughly 90% of men and producing visible regrowth in about 48% over one to two years. Originally developed for prostate enlargement at 5mg (Proscar), the lower 1mg dose (Propecia) was approved specifically for hair loss in 1997. It remains one of only two FDA-approved oral treatments for androgenetic alopecia and has decades of long-term safety data.
Moleküler Gösterim
M.W.: 372.54 Da
PubChem 2D yapı diyagramı
Referans Flakon
Referans illüstrasyonu — ürün listesi değildir
Etki Mekanizması
Finasteride competitively and selectively inhibits the Type II isoform of the enzyme 5-alpha reductase, which is predominantly found in hair follicles, the prostate, and the liver. This enzyme converts testosterone into dihydrotestosterone (DHT). By blocking this conversion, finasteride reduces serum DHT levels by approximately 70% and scalp DHT by roughly 66% at the 1mg dose. Since DHT is the primary androgen driving miniaturization of hair follicles in genetically susceptible individuals, lowering DHT levels allows affected follicles to recover, extend the anagen (growth) phase, and produce thicker terminal hairs. Notably, finasteride does not block androgen receptors and has minimal effect on testosterone levels, which may increase slightly (by about 10-15%) as a compensatory response to reduced DHT.
Finasteride is an FDA-approved 5-alpha reductase inhibitor that blocks the conversion of testosterone to dihydrotestosterone (DHT), the primary androgen responsible for androgenetic alopecia (male pattern hair loss) and benign prostatic hyperplasia (BPH). At 1mg daily, it reduces scalp DHT levels by approximately 66%, slowing or halting hair loss in roughly 90% of men and producing visible regrowth in about 48% over one to two years. Originally developed for prostate enlargement at 5mg (Proscar), the lower 1mg dose (Propecia) was approved specifically for hair loss in 1997. It remains one of only two FDA-approved oral treatments for androgenetic alopecia and has decades of long-term safety data.
Moleküler Veri
Araştırma Endikasyonları
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Doz Protokolleri
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| Hedef | Doz | Sıklık | Yol |
|---|---|---|---|
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Etkileşimler
Testosterone (TRT)
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Minoxidil
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Dutasteride
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RU-58841
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GHK-Cu
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Kaynaklar
- Long-term (5-year) multinational experience with finasteride 1 mg in the treatment of men with androgenetic alopecia — Kaufman KD, Olsen EA, Whiting D, Savin R, DeVillez R, Bergfeld W, Price VH, Van Neste D, Roberts JL, Hordinsky M, Shapiro J, Binkowitz B, Gormley GJ
- The effects of finasteride on scalp skin and serum androgen levels in men with androgenetic alopecia — Drake L, Hordinsky M, Fiedler V, Swinehart J, Unger WP, Cotterill PC, Thiboutot DM, Lowe N, Jacobson C, Whiting D, Stieglitz S, Savin R, Clemmensen OJ, Therkildsen P, Lange Brock N, Tun P, Stegink AJ, Waldstreicher J
- A randomized, placebo-controlled trial of finasteride for the treatment of androgenetic alopecia in men — Leyden J, Dunlap F, Miller B, Winters P, Lebwohl M, Hecker D, Kraus S, Baldwin H, Shalita A, Draelos Z, Markou M, Thiboutot D, Rapaport M, Kang S, Kelly T, Pariser D, Webster G, Hordinsky M, Sperling L, Moy R, Shupack J, Stegink AJ, Waldstreicher J
- Finasteride in the treatment of men with androgenetic alopecia — McClellan KJ, Markham A
- The importance of dual 5alpha-reductase inhibition in the treatment of male pattern hair loss: results of a randomized placebo-controlled study of dutasteride versus finasteride — Olsen EA, Hordinsky M, Whiting D, Stough D, Hobbs S, Ellis ML, Wilson T, Rittmaster RS