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Did you mean 5-alpha-reductase inhibitor?

Glossary 5-alpha-reductase inhibitor

blocks enzyme converting testosterone to dihydrotestosterone (DHT)

A 5-alpha-reductase inhibitor is a type of medication that blocks the enzyme 5-alpha-reductase, which is responsible for converting testosterone into dihydrotestosterone (DHT). By reducing DHT levels, these inhibitors can help treat conditions like male pattern baldness and benign prostatic hyperplasia (BPH).

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Research

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research Exploring the Inhibitory Potential of Phytosterols β-Sitosterol, Stigmasterol, and Campesterol on 5-Alpha Reductase Activity in the Human Prostate: An In Vitro and In Silico Approach

12 citations , November 2024 in “Plants”

This study found that the phytosterols β-sitosterol, stigmasterol, and campesterol have low-to-negligible inhibitory activity against steroidal 5α-reductase type 2 compared to the synthetic inhibitor dutasteride, with β-sitosterol showing the highest activity among the tested phytosterols.

research Finasteride, a 5alpha-reductase inhibitor, blocks the anticonvulsant activity of progesterone in mice.

48 citations , February 1999 in “PubMed”

This study found that the anticonvulsant effects of progesterone against PTZ-induced seizures in mice require conversion to allopregnanolone, as shown by the reversal of these effects with a 5alpha-reductase inhibitor.

Inhibitory Activities of Some Traditional Chinese Herbs Against Testosterone 5α-Reductase and Effects of Cacumen Platycladi on Hair Regrowth in Testosterone-Treated Mice

research Inhibitory activities of some traditional Chinese herbs against testosterone 5α-reductase and effects of Cacumen platycladi on hair re-growth in testosterone-treated mice

25 citations , November 2015 in “Journal of Ethnopharmacology”

This study found that Cacumen platycladi extract significantly promoted hair growth and reduced dihydrotestosterone levels by inhibiting 5α-reductase activity in an androgen-sensitive mouse model.

research Antioxidant and 5α-Reductase Inhibitory Activity of Momordica charantia Extract, and Development and Characterization of Microemulsion

1 citations , April 2022 in “Applied sciences”

This study reports the development of a microemulsion using Momordica charantia extract, which demonstrated strong antioxidant and 5α-reductase inhibitory activity, potentially aiding hair loss management. The microemulsion was stable over 12 weeks, suggesting its future potential for cosmetic or pharmacological applications.

research Sexual Problems of Men With Androgenic Alopecia Treated With 5-Alpha Reductase Inhibitors

10 citations , October 2018 in “Sexual medicine reviews”

This review discusses sexual side effects in men with androgenic alopecia treated with 5-alpha reductase inhibitors and reports no new clinical findings.

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community 5 alpha reductase type 1 is in brain tissue producing the main endogenous gabaergic allopregnanolone, not 2. How can finasteride as a 5ar2 lower that?

27 upvotes 1 year ago

Finasteride and dutasteride are discussed for hair loss, with concerns about their effects on neurosteroids and potential side effects like depression. Alternatives like topical estrogen and lifestyle changes are considered, with varying opinions on mental health and hair regrowth.

community Theoretically won't this be better than finasteride? Azelaic acid + zinc

9 upvotes 3 years ago

The conversation discusses using zinc sulphate and azelaic acid to inhibit 5 alpha-reductase activity, which could potentially treat androgen-related skin conditions like hair loss. Combining these with vitamin B6 could enhance the effect, potentially offering an alternative to finasteride.

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 Re:you (NOVOGRO) New Hair Loss Treatment Coming in August

45 upvotes 3 months ago

NOVOGRO's new hair loss treatment is questioned for its effectiveness compared to minoxidil, with skepticism about its claims and trial results. The product targets women and lacks the 5α-reductase inhibitor NV-1065, which is still in development.

community Supposedly dairy contains precursors to DHT that are already 5a-reduced and convert to DHT independent of 5a-reductase inhibition

26 upvotes 5 months ago

Dairy may contain DHT precursors that could affect hair loss and prostate health, with some users noting reduced hair shedding after eliminating dairy. Individual responses to dairy and DHT blockers vary, with some attributing hair health to diet changes and others seeing no impact.

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Learn

10 / 15 results

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Neem Oil

natural substance from Neem tree with medicinal and pesticidal properties

learn Overview

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 Finasteride

Frontline, gold standard treatment for combatting androgenic alopecia

learn Saw Palmetto

a natural and far less effective alternative to Finasteride

learn procapil

Want to stop hormonal hair loss without touching your hormone levels? Procapil could block the enzyme doing the damage. 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 Omega 3

Is the omega-3 to omega-6 ratio in your diet feeding your hair problem without you knowing? Nutrition sources describe a lopsided omega-6 to omega-3 intake as pro-inflammatory, but no published human study shows that the dietary ratio changes 5-alpha reductase, scalp DHT or hair loss; the one relevant trial tested a commercial omega-3/6 plus antioxidant supplement in 120 women, not a change in dietary fat ratio.

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 Metformin

Does metformin help control DHT levels that trigger androgenic alopecia? Metformin has been shown to lower circulating androgens in women with PCOS, but no published study has measured scalp DHT, 5-alpha reductase activity in the follicle, or hair density in anyone taking it — so its effect on pattern hair loss is untested, and it is not a DHT blocker.

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