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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

5 / 1000+ results

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 FRI-02 FROM GIRLS TO BOYS TO OLDER MEN, THE INTERESTING TALE OF THE GUEVEDOCES AND 5-ALPHA REDUCTASE INHIBITORS

March 2016 in “The Journal of Urology”

This historical review traces the discovery of 5-alpha reductase inhibitors, widely used in urology, from the study of guevedoces, Dominican children with a rare disorder leading to significant androgenization at puberty.

research The 5-alpha reductase inhibitor finasteride reduces dyskinesia in a rat model of Parkinson’s disease

15 citations , January 2017 in “Experimental Neurology”

This study found that finasteride significantly reduced levodopa-induced dyskinesia in both male and female rats without diminishing l-DOPA's motor benefits, indicating potential for clinical trials in Parkinson's patients.

research Analysis of breast health outcomes in women on oral 5-alpha reductase inhibitors: A single-center retrospective cohort study

6 citations , September 2024 in “Journal of the American Academy of Dermatology”

Oral 5-alpha reductase inhibitors do not increase breast cancer or benign breast disorder risk in women.

5-Alpha-Reductase Inhibitors Reduce Remission Time of COVID-19: Results From a Randomized Double-Blind Placebo-Controlled Interventional Trial in 130 SARS-CoV-2 Positive Men

research 5-Alpha-Reductase Inhibitors Reduce Remission Time of COVID-19: Results From a Randomized Double Blind Placebo Controlled Interventional Trial in 130 SARS-CoV-2 Positive Men

5 citations , November 2020 in “medRxiv (Cold Spring Harbor Laboratory)”

In this study, the authors reported that dutasteride significantly reduced total remission time for COVID-19 symptoms in men compared to placebo, especially for fatigue and loss of taste or smell.

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Community Join

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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.

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 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 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 Does anyone know about the mechanism between creatine and 5-alpha reductase?

7 upvotes 7 years ago

Creatine may raise DHT levels, potentially affecting hair loss, but its exact mechanism is unclear. Some users report that finasteride remains effective even when taking creatine.

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Learn

10 / 15 results

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 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 Finasteride

Frontline, gold standard treatment for combatting androgenic alopecia

learn Saw Palmetto

a natural and far less effective alternative to Finasteride

learn Azelaic Acid

acid used for antimicrobial, anti-inflammatory and anti-androgenic properties

learn Rosemary

herb and oil with stimulant, circulatory, anti-inflammatory and antioxidant properties

learn Osteopontin

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

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 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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