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Glossary5α-reductase (5AR)

enzyme converting testosterone into potent dihydrotestosterone (DHT)

5α-reductase is an enzyme that converts testosterone into dihydrotestosterone (DHT), a more potent androgen hormone. This enzyme plays a significant role in various biological processes, including the development of male characteristics and the regulation of hair growth. Inhibitors of 5α-reductase, such as finasteride, are commonly used to treat conditions like male pattern baldness and benign prostatic hyperplasia.

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community 5ar Type I in the frontal hair follicles - Dutasteride

in Finasteride/Dutasteride 21 upvotes 6 months ago

The conversation discusses that dutasteride may be more effective than finasteride for frontal hair loss due to higher 5ar Type 1 enzyme activity in that area. Some users question the validity of this information, while others confirm it with additional sources.

community 5ar alpha reductase stimulation is different depending on whether it’s type 1 or 2

in Hair Systems 16 upvotes 1 year ago

The conversation discusses how different factors can stimulate type 1 and type 2 isoforms of 5-alpha reductase, which are enzymes linked to hair loss. Specific treatments mentioned include oral Dutasteride and topical Finasteride.

community 5ARI (dutasteride) Associated with Adverse Metabolic Effects

23 upvotes 6 years ago

Dutasteride is associated with increased blood glucose, HbA1c, LDL cholesterol, and liver enzyme activity, potentially leading to diabetes, NAFLD, and liver metabolism changes. The conversation highlights concerns about these adverse effects and calls for more studies, including on finasteride.

community Similar 5ar inhibitors to fin?

in Finasteride/Dutasteride 3 years ago

Natural vitamins like pumpkin seed oil, saw palmetto, and ecklonia cava are discussed for their potential to lower DHT levels. They may work similarly to finasteride but are significantly weaker.

community will long term 5ar inhibition alter my physical appearance?

in Treatment 2 upvotes 3 months ago

A 19-year-old concerned about long-term effects of 5AR inhibitors on physical appearance. They have used finasteride and plan to try dutasteride or RU58841; responses suggest improved skin, hair, and confidence.

community DHT and 5AR respect post, it's importance within the brain

in Research/Science 111 upvotes 8 months ago

The conversation discusses whether to use finasteride for hair loss, considering its role in inhibiting DHT and 5AR, which can affect brain function and mood. Some users report anxiety and depression from finasteride, while others do not experience these side effects and emphasize the importance of DHT for brain and prostate health.

community Alfatradiol is a topical 5AR inhibitor that this study shows is effective in stopping hair loss without sides. It can be bought OTC in Europe right now. Thoughts?

11 upvotes 8 years ago

Hair loss treatments, specifically the use of Alfatradiol as an over-the-counter topical 5AR inhibitor that has been shown to be effective in stopping hair loss without side effects. Other treatments discussed include Minoxidil, finasteride and RU58841.

community Topical Finasteride Doesn't Directly Reduce 5ar Enzyme on Scalp

in Finasteride/Dutasteride 72 upvotes 1 year ago

Topical Finasteride doesn't directly reduce 5ar enzyme on scalp and has the same mechanism as oral, needing to go through the liver. Users debate the accuracy of this information and discuss various studies and experiences.

community FINALLY stopped shedding constantly after 1 year on 5ar inhibitors!! Moral of the story: Just wait

in Chat 93 upvotes 1 month ago

After using finasteride for 7 months and dutasteride for 5 months, the user experienced a significant reduction in hair shedding and scalp itchiness. They advise patience with hair loss treatments and suggest focusing on a good haircut and reducing stress.

community Does age play a role in how you respond to 5AR inhibitors? (finasteride/dutasteride)

in Research/Science 24 upvotes 7 months ago

The conversation discusses whether age affects the side effects and effectiveness of hair loss treatments like finasteride and dutasteride. Some believe early treatment yields better results, while others mention varied outcomes across ages and personal regrowth experiences without a clear consensus on age impact.

community The best stack that doesn't include a 5ARI

in Treatment 10 upvotes 1 year ago

The conversation is about finding effective hair loss treatments without using finasteride or dutasteride. Suggested treatments include topical minoxidil, oral minoxidil, microneedling, PRP, and RU58841.

community Has anyone seen this study before? It claims that B6+Zinc can inhibit 5ar activity

in Technology 78 upvotes 1 year ago

The conversation discusses using B6 and Zinc to inhibit 5ar activity, similar to Fin and Dut. Minoxidil is mentioned as a supplementary treatment.

community Dutasteride might be better for your hairline. Some people have more type 1 5AR activity in their scalp than others.

in Finasteride/Dutasteride 52 upvotes 1 year ago

Dutasteride might be better for hairline due to varying levels of 5AR activity in scalps. Genetic tests can determine if finasteride is enough or if dutasteride is needed.

community A systematic bro-science review of DHT, 5AR, neurosteroids, sexual health and 5AR inhibitors

in Research/Science 37 upvotes 2 years ago

Hair loss treatments, specifically 5AR inhibitors, can impact neurosteroids and sexual health. The effects of topical fin/dut on tissue-specific DHT levels are unclear.

community Would there be ANY reason to still take 5AR inhibitors if pyrilutamide does what is intended?

in Research/Science 17 upvotes 2 years ago

A potential new treatment for hair loss, Pyrilutamide, and the discussion of whether or not people should still be taking traditional treatments like Minoxidil and Finasteride with it.

community Topical Dutasteride - Non-Hormonal, Side Effect Free 5ARI

in Finasteride/Dutasteride 26 upvotes 3 months ago

The conversation discusses the effectiveness and skepticism around topical dutasteride for hair loss, with mentions of combining it with other treatments like minoxidil and oral medications. Some users doubt its efficacy due to lack of independent studies and potential conflicts of interest.

community Topical Dutasteride - Non-Hormonal, Side Effect Free 5ARI?

in Treatments 372 upvotes 3 months ago

Topical dutasteride is suggested as a low side-effect treatment for hair loss, with a proposed dose of 0.025% 1ml/day. It is considered better than finasteride due to its even inhibition of DHT isoforms and lower systemic absorption.

community How come Dut doesn’t cause more brain problems than fin if it inhibits Type 1 5AR?

in Finasteride/Dutasteride 22 upvotes 4 months ago

Dutasteride and finasteride have similar risk profiles despite Dutasteride blocking more types of 5AR in the brain. Some users report no mood issues with either drug, and it is suggested that Dutasteride's larger molecular size may limit its ability to cross the blood-brain barrier.

community Whoever had success with PYRILUTAMIDE, please give us hope outside of 5AR inhibitors.

in Product 7 upvotes 3 months ago

Users discuss using pyrilutamide for hair loss, seeking alternatives to 5AR inhibitors. They mention using minoxidil, ketoconazole shampoo, and RU58841.

community From the research study: "Dihydrotestosterone and the concept of 5a-reductase inhibition in human benign prostatic hyperplasia" - G. Bartsch, R.S. Rittmaster, H. Klocker (2002) in the "World Journal of Urology".

in Research/Science 23 upvotes 2 years ago

Dutasteride is a stronger 5AR inhibitor than finasteride and can significantly lower DHT levels. Reduced doses of dutasteride may lower side effects.

community Transient and Permanent Effects of Finasteride Use

in Research/Science 154 upvotes 3 years ago

Potential side effects of 5AR inhibitors like finasteride and dutasteride. Users debate risks, benefits, and personal experiences with these hair loss treatments.

community Exactly 3 years of DHT inhibition!! Hairline continues to reverse miniaturization. Turning 44 next month.

in Progress Pictures 274 upvotes 1 year ago

The user has been using 5ar inhibitors for 3 years to combat hair loss, starting with Finasteride and then switching to Dutasteride. They also use topical Minoxidil and microneedling as part of their routine, and have seen improvements in their hairline.

community Discussion: High DHT levels while on Fin+Dut with substantial progress (pics)

in Progress Pictures 63 upvotes 2 years ago

A user's experience with using 5AR inhibitors (Finasteride and Dutasteride) in combination with Minoxidil foam and microneedling, which resulted in substantial improvements to their crown density and hairline, despite high systemic levels of testosterone and dihydrotestosterone.

community Zix + Topical Fin : Blood Test Before/After, AMA and suggestions

in Treatment 47 upvotes 4 years ago

A user's plan to use Zix and topical finasteride (5AR inhibitors) for hair loss, followed by blood testing before/after. The user has suggested creating a fund to cover part of the cost of their blood tests. Replies to their post discuss the effectiveness of the treatments.

community What do we actually know about HMI-115?

in Chat 16 upvotes 1 year ago

The post and conversation are about HMI-115, a potential treatment for hair loss. The conclusion is that HMI-115 is not a 5ar-inhibitor and is instead a prolactin receptor inhibitor. Some users are skeptical about its effectiveness and believe that baldness will still be a problem in the future.

community Source for sterile dutasteride for mesotherapy?

in Finasteride/Dutasteride 1 upvotes 1 month ago

The conversation is about finding a source for sterile dutasteride for mesotherapy to avoid side effects from oral 5AR blockers. The user is currently using microneedling and 0.01% topical dutasteride and plans to use transplants.

community No, Finasteride as a treatment for MPB was not an "accident"

in Research/Science 105 upvotes 3 years ago

Finasteride was intentionally developed to treat BPH and later approved for male pattern baldness (MPB) due to its 5AR inhibition effects. The delay in MPB approval was due to concerns about off-label use for female hirsutism and the prioritization of treating a more debilitating condition.

community Why are there no FDA approved NSAA's yet?

in Research/Science 6 months ago

The conversation discusses why there are no FDA-approved NSAAs like RU58841 on the market, despite their potential superiority to 5AR inhibitors like finasteride. It explores the effectiveness of treatments like Minoxidil, finasteride, and RU58841 for hair loss.

community What's the deal with Zinc and DHT?

in Chat 47 upvotes 6 months ago

The conversation discusses the conflicting information about Zinc's effect on DHT and its role in hair loss. It mentions that Zinc can act as a 5AR inhibitor at high doses but may increase DHT if taken to correct a deficiency, and highlights the importance of nutritional balance for hair health.

community Growth stimulants worth a damn besides minox?

in Minoxidil 3 upvotes 7 months ago

The user experiences side effects from minoxidil and is considering alternatives like stemoxydine and adenosine for hair regrowth and density, but finds options like caffeine and various oils unreliable. They are also using a 5AR inhibitor (finasteride).