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Did you mean 5α-reductase inhibition?

Glossary 5α-reductase inhibition

blocking enzyme that converts testosterone to hair-loss hormone DHT

5α-reductase inhibition refers to the process of blocking the enzyme 5α-reductase, which is responsible for converting testosterone into dihydrotestosterone (DHT). DHT is a hormone that can contribute to hair loss and conditions like benign prostatic hyperplasia. By inhibiting this enzyme, medications like finasteride and dutasteride can help reduce hair loss and treat these conditions.

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Research

5 / 1000+ results

research Effect of Testosterone Supplementation With and Without a Dual 5α-Reductase Inhibitor on Fat-Free Mass in Men With Suppressed Testosterone Production

124 citations , March 2012 in “JAMA”

This abstract discusses the unclear role of dihydrotestosterone (DHT) in postembryonic life in marsupials and possibly humans, reporting no new findings.

research Curcuma aeruginosa, a novel botanically derived 5α-reductase inhibitor in the treatment of male-pattern baldness: a multicenter, randomized, double-blind, placebo-controlled study

34 citations , July 2011 in “Journal of Dermatological Treatment”

This study found that a combination of 5% hexane extract of Curcuma aeruginosa and 5% minoxidil slowed hair loss and increased hair growth in men with androgenetic alopecia.

research The new paradigm for androgenetic alopecia and plant-based folk remedies: 5α-reductase inhibition, reversal of secondary microinflammation and improving insulin resistance

16 citations , September 2018 in “Journal of Ethnopharmacology”

This review discusses the role of inheritance, androgens, and microinflammation in androgenetic alopecia and suggests some plant-based folk remedies may help address these factors but reports no new clinical results.

research Germination Enhances Phytochemical Profiles of Perilla Seeds and Promotes Hair Growth via 5α-Reductase Inhibition and Growth Factor Pathways

July 2025 in “Biology”

This study found that supercritical fluid extraction of germinated perilla seed significantly promoted hair follicle cell proliferation and gene expression related to hair growth, suggesting its potential as a natural treatment for hair loss.

research PROCESS VALIDATION OF BETA-SITOSTEROL HAIR GEL FORMULATION AND EVALUATION OF 5 ALPHA REDUCTASE INHIBITION IN VITRO FOR THE TREATMENT OF ANDROGENETIC ALOPECIA

March 2023 in “International Journal of Applied Pharmaceutics”

In this study, researchers formulated a topical gel containing β-sitosterol for alopecia treatment and found it demonstrated good 5 alpha reductase inhibitory activity in vitro, comparable to a commercial product, indicating its potential for further antiandrogenic activity investigation.

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Community Join

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community FCE 28260: A Forgotten 5α-Reductase Inhibitor

in Research 330 upvotes 2 years ago

FCE 28260 (PNU 156765), an under-explored 5α-reductase inhibitor, showcases promising results in research by Giudici et al., outperforming well-known treatments like Finasteride in reducing the conversion of testosterone to DHT. Its superior efficacy, demonstrated through lower IC50 values in both natural and human recombinant enzyme studies, suggests it could offer more effective management of DHT-related conditions. Additionally, its lower molecular weight hints at better potential for topical application, potentially offering advantages in treating conditions such as androgenic alopecia. Despite its potential, it has not advanced in development, possibly due to financial limitations, leaving its therapeutic prospects and side effect profile largely unexplored.

community Androsterone as a Neurosteroid Replacement Strategy for 5α-Reductase Inhibitor–Associated Sexual and Affective Dysfunction

in Research/Science 36 upvotes 2 months ago

Androsterone may help with sexual and affective dysfunction from finasteride by replacing disrupted neurosteroids without increasing androgenic side effects. Controlled testing is needed to confirm its effectiveness and safety.

community Allopregnanolone deficiency by 5-ari inhibition (fin/dut users)

in Finasteride/Dutasteride 11 upvotes 2 years ago

The conversation is about managing allopregnanolone deficiency caused by 5-alpha-reductase inhibitors like finasteride or dutasteride. Specific treatments discussed for hair loss include Minoxidil, finasteride, and RU58841.

community Did anybody use beta sisterol for hair loss? I saw in many articles in the internet that said that beta sisterol blocks dht by inhibiting 5a reductase type 2 enzyme and some reviews of people who said that it worked better than saw palmetto in terms of stoping hair loss and helping prostate.

in Research/Science 9 upvotes 3 years ago

Beta-sitosterol may inhibit 5-alpha reductase type 2 enzyme, potentially reducing DHT levels and promoting hair growth, similar to finasteride but possibly with fewer side effects. Its effectiveness and side effects compared to other treatments like saw palmetto and finasteride remain uncertain due to limited research.

community Which Saw Palmetto is good for blocking 5 alpha reductase, Serenoa repens or Chamaerops humilis?

6 years ago

The conversation is about determining which type of Saw Palmetto, either Chamaerops humilis or Serenoa repens, is effective for inhibiting the 5 alpha reductase enzyme related to hair loss. Specific treatments mentioned are Minoxidil, finasteride, and RU58841.

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Learn

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learn Dutasteride

5-alpha reductase inhibitor that blocks both enzyme types, a stronger DHT blocker than finasteride

learn Finasteride

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

learn procapil

Does Procapil block DHT without affecting hormones? What the evidence shows Procapil's supplier describes it as inhibiting 5-alpha reductase at the scalp without changing hormone levels, but the published support is cell and animal work plus one small human study of a caffeine-plus-Procapil formula. It is a cosmetic ingredient, not an approved hair-loss treatment, and no trial has compared it with finasteride or minoxidil.

learn Fluridil

How is Fluridil different from other DHT blockers like finasteride? Fluridil is a topical androgen-receptor blocker applied to the scalp, while finasteride is an oral 5-alpha-reductase inhibitor that lowers DHT throughout the body. Finasteride is FDA-approved and far better studied; Fluridil rests on one 43-man trial and is not licensed as a hair-loss medicine, so its long-term safety and effect size are unknown.

learn Ecklonia Cava

Can Ecklonia Cava be used as a preventive treatment for early signs of hair thinning? No human trial has tested Ecklonia cava for hair loss, so it cannot be called preventive; the evidence is mouse studies and cell cultures suggesting antioxidant activity and 5-alpha-reductase inhibition in the lab.

learn Saw Palmetto

Palm-berry extract taken as a supplement

learn Rosemary

Herb whose oil is used in hair care

learn Neem Oil

Oil from the neem tree, used in traditional remedies

learn white tea

Can white tea help reduce DHT-related hair thinning in androgenic alopecia? In lab tests, tea catechins blocked type 1 (not type 2) 5-alpha-reductase; no human study shows white tea lowers scalp DHT or reduces hair thinning.

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