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research LY191704: a selective, nonsteroidal inhibitor of human steroid 5 alpha-reductase type 1.

53 citations , June 1993 in “Proceedings of the National Academy of Sciences of the United States of America”

This study identified LY191704 as a specific noncompetitive inhibitor of human 5 alpha-reductase type 1, which may be useful in treating endocrine disorders related to DHT overproduction.

Avicequinone C Isolated from Avicennia Marina Exhibits 5α-Reductase Type 1 Inhibitory Activity Using an Androgenic Alopecia Relevant Cell-Based Assay System

research Avicequinone C Isolated from Avicennia marina Exhibits 5α-Reductase-Type 1 Inhibitory Activity Using an Androgenic Alopecia Relevant Cell-Based Assay System

19 citations , May 2014 in “Molecules”

This study found that the methanolic heartwood extract of Avicennia marina significantly inhibits 5α-reductase type 1, reducing 5α-DHT production by 52% in a cell-based assay with human hair dermal papilla cells.

Natural Product-Inspired Bis(Trifluoromethyl) Phenyl Hydroxycinnamate Derivatives as Promising Nonsteroidal Inhibitors of Human Steroid 5α-Reductase Type-1: Synthesis, In Vitro, and In Silico Studies

research Natural Product-Inspired Bis(trifluoromethyl) Phenyl Hydroxycinnamate Derivatives as Promising Nonsteroidal Inhibitors of Human Steroid 5α-Reductase Type-1: Synthesis, In Vitro, and In Silico Studies

August 2025 in “ACS Omega”

This study synthesized and evaluated hydroxycinnamate derivatives for their ability to inhibit human SRD5A1, finding that three compounds showed significant inhibitory activity and low cytotoxicity. Compound 10a notably reduced SRD5A1 protein expression in cells, suggesting potential for nonsteroidal treatment of androgen-related conditions.

research Selective non-steroidal inhibitors of 5α-reductase type 1

49 citations , January 2004 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology”

This review discusses the development and selectivity of 5 alpha-reductase inhibitors, particularly non-steroidal ones, and reports no new clinical trial results.

Methylation of CpG Islands in Promoter of Type 2 5-Alpha Reductase and Implications of Finasteride Resistance for BPH Therapy

research 102 Methylation of CpG islands in promoter of type 2 5-α reductase and implications of finasteride resistance for BPH therapy

March 2016 in “European Urology Supplements”

This study identified that methylation of the 5-AR2 gene promoter is linked to reduced expression of 5-AR2 protein, which may explain why some BPH patients are resistant to finasteride treatment.

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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 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.

community 3 months progress (1mg oral fin + 2.5 mg oral min)

21 upvotes 4 months ago

A 33-year-old male shared his 3-month progress using 1mg oral finasteride and 2.5mg oral minoxidil, along with supplements and serums, reporting thicker hair and new growth in thinning areas without side effects. Users suggested considering dutasteride or a hair transplant for better results, while others encouraged continuing the current regimen for at least a year.

community 1 year on fin. No results. I give up.

in Finasteride/Dutasteride 43 upvotes 3 years ago

A user who has been taking finasteride, minoxidil, and microneedling for one year with no results, and the replies discuss other treatments, including dutasteride, which is feared due to potential side effects.

community One year on dut 5mg daily as a 19-20 yr old , answering any queries

in Finasteride/Dutasteride 10 upvotes 5 months ago

A 19-20-year-old has been using 0.5 mg of dutasteride daily for a year to combat hair loss, avoiding minoxidil due to side effects. They plan to continue this regimen and consider a future hair transplant, experiencing no significant side effects from dutasteride.

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