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Finasteride

also fin, Propecia

Popular 5-alpha reductase inhibitor that lowers DHT, taken as a pill or used topically

Finasteride, sold under the brand names Proscar and Propecia among others, is a medication used to treat pattern hair loss and benign prostatic hyperplasia (BPH). It can also be used to treat excessive hair growth in women. It is usually taken orally but there are topical formulations for patients with hair loss, designed to minimize systemic exposure by acting specifically on hair follicles.

Information, not medical advice. Talk to a licensed doctor or pharmacist before starting or changing a treatment.

Research 10 Subscribe

  1. Finasteride and the hair cycleJournal of the American Academy of Dermatology · 2000 · 30 citations
  2. Guidelines on the use of finasteride in androgenetic alopeciaIndian Journal of Dermatology, Venereology and Leprology · 2016 · 81 citations
  3. Finasteride Treatment of Female Pattern Hair LossArchives of Dermatology · 2006 · 131 citations
  4. Finasteride and Its Potential for the Treatment of Female Pattern Hair Loss: Evidence to DateDrug Design Development and Therapy · 2020 · 80 citations
  5. Finasteride for hair loss: a reviewJournal of Dermatological Treatment · 2021 · 92 citations
  6. Comparison between dutasteride and finasteride in hair regrowth and reversal of miniaturization in male and female androgenetic alopecia: a systematic reviewDermatology Reports · 2024 · 6 citations
  7. Finasteride in the treatment of men with frontal male pattern hair lossJournal of the American Academy of Dermatology · 1999 · 238 citations
  8. Adverse Effects and Safety of 5-alpha Reductase Inhibitors (Finasteride, Dutasteride): A Systematic Review.PubMed Central · 2016 · 149 citations
  9. Finasteride increases anagen hair in men with androgenetic alopeciaBritish Journal of Dermatology · 2000 · 174 citations
  10. Finasteride Treatment of Hair Loss in WomenAnnals of Pharmacotherapy · 2010 · 45 citations
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Posts 20

  1. so does finasteride essentially stop balding the moment you take it?Reddit · 14 Feb 2026
  2. How many people experience side effects from Finasteride/Propecia?Reddit · 3 Jun 2020
  3. Topical Finasteride Results Reporting: Who has gotten resultsReddit · 27 Jul 2026
  4. 25 years on finasteride - my experienceReddit · 5 Jan 2025
  5. if Post Finasteride Syndrome is real. Why is it only the negative effects and not positive have log term effect?Reddit · 20 Apr 2026
  6. Finasteride side effects are extremely rare and knowing about the side effects puts you at a higher riskReddit · 2 Jan 2019
  7. I don’t get Finasteride prescribed anymore..Reddit · 1 Apr 2026
  8. Thoughts on Finasteride and Sexual Side EffectsReddit · 22 May 2019
  9. Finasteride and long term regrowthReddit · 21 Apr 2026
  10. Dear balding brothers, I want to talk to you about Finasteride side effects...WITHOUT the sensationalist slat that anyone who's had side effects will put on it.Reddit · 19 Mar 2014
  11. I’m considering stopping finasterideReddit · 27 Dec 2025
  12. How long does it take for side effects from finasteride to appear?Reddit · 10 Aug 2022
  13. Does finasteride actually stop hair loss very quickly?Reddit · 16 Mar 2026
  14. Anyone experience sides with topical finasteride?Reddit · 5 Aug 2021
  15. Why do some doctors recommend starting with minoxidil before finasteride? (treatment philosophy question)Reddit · 22 Apr 2026
  16. Original Propecia vs. Generic Finasteride – My Experience & Why Brand Name Might Matter More Than You ThinkReddit · 30 May 2025
  17. Finasteride long term users experienceReddit · 19 Feb 2026
  18. HUGE WARNING ABOUT PROPECIA/FINASTERIDEReddit · 16 Mar 2017
  19. Finasteride after 6 months of use. Progress(?) picturesReddit · 3 Mar 2026
  20. Is FINASTERIDE worth the risk?Reddit · 26 Apr 2024
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