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    Did you mean ER Antagonist?
    GlossaryEstrogen Receptor Antagonist (ER Antagonist)

    blocks estrogen from activating its cellular receptors

    An Estrogen Receptor Antagonist, also known as an Estrogen Blocker or ER Antagonist, is a substance that binds to estrogen receptors on cells and prevents estrogen from exerting its effects. This can be useful in treating conditions like hormone-sensitive cancers, such as certain types of breast cancer, by inhibiting the growth-promoting effects of estrogen on these cancer cells.

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    Tracking 9 products like 245 Hair Solution RU58841 8%, 255 RU58841 8% PG+ Ethanol, 256 RU58841 8% KB solution, 257 RU58841 5% PG+ Ethanol and 258 RU58841 5% + KB solution from by companies like MV supplements and Anageninc. View all 9 products »
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      community Group Buy for MR antagonist finerenone

      in Product  11 upvotes 1 year ago
      User discusses group buy for finerenone, a third-gen mineralocorticoid antagonist for hair loss treatment. Finerenone inhibits TGFb, NOX, and ROS, and improves renal and cardiac function; topical dose should be no more than 10mg per day.

      community Pyrilutamide ,the molecule’s true nature

      in Research  302 upvotes 1 month ago
      Pyrilutamide is a selective AR antagonist with a high binding affinity, making it effective in competing with DHT for androgen receptors. The 1% concentration is more effective than the 0.5%, but the latter may suffice for mild hair loss; the drug is considered a good option for those avoiding 5AR blockers due to side effects.

      community New Approach to Ketoconazole or just waste of time?

      in Ketoconazole  21 upvotes 4 months ago
      The post discusses using 2% ketoconazole shampoo as a competitive androgen receptor antagonist for hair loss, applied for 1.5 hours daily. The user questions its effectiveness and potential benefits compared to finasteride and minoxidil.

      community A Technical Question About Pyrilutamide

      in Research/Science  5 upvotes 1 year ago
      Pyrilutamide is believed to be more effective than RU58841 and 1 mg finasteride in treating hair loss, with no systemic hormonal effects and the potential to block more than 31% of scalp DHT. It may also antagonize scalp testosterone due to its action as an androgen receptor antagonist.

      community HLT Megathread on HMI-115 (key takeaways in comments)

      in Research/Science  40 upvotes 1 year ago
      HMI-115, a newly discovered hair loss treatment that could potentially be effective for those with diffuse thinning and telogen effluvium. It is based on prolactin receptor antagonist signaling and has already undergone Phase I trials in women, with potential commercialization by 2027.

      community How much dht does Nizoral shampoo block?

      in Ketoconazole  101 upvotes 3 years ago
      Hair loss treatments discussed include Minoxidil, Finasteride, RU58841, and Nizoral shampoo. Nizoral's effectiveness is debated, with some suggesting it works as a weak antagonist for androgen receptors, while others attribute its benefits to anti-fungal and anti-inflammatory properties.

      community So... any chinese suppliers for real pyri?

      in Research/Science  6 upvotes 2 months ago
      The conversation discusses sourcing pyrilutamide from China for hair loss treatment, highlighting its potency compared to other AR antagonists like bicalutamide and RU58841. The user expresses interest in trying pyrilutamide despite mixed results in clinical trials.

      community Topical finasteride might be a lie

      in Research/Science 11 months ago
      The conversation discusses doubts about the effectiveness of topical finasteride for hair loss, suggesting that DHT could be produced elsewhere in the body and affect the scalp. It proposes that androgen receptor antagonists like spironolactone and clascoterone might be more effective as they could prevent this potential bypass mechanism.

      community Thoughts on my Topical and Oral concept idea ?

      in Treatment  1 upvotes 5 months ago
      The user is seeking advice on improving their hair loss treatment regimen, considering changes to their topical solution, and is curious about others' daily routines and recommendations for medications and supplements. They are contemplating switching Tretinoin for Tazarotene, Latanoprost for Bimatoprost, and possibly adding Alfatradiol, Topical Melatonin, or a topical androgen receptor antagonist.

      community Overwhelming amount of anti-androgens

      in Female 1 year ago
      The conversation discusses the effectiveness of anti-androgens for hair loss, with a preference for topical treatments like RU58841 over oral options due to better scalp concentration and fewer side effects. Topical finasteride at 0.1% may provide some results, especially when combined with a topical androgen receptor antagonist like RU58841.

      community Lowering scalp prolactine - Any ideas ?

      in Treatment  2 upvotes 11 months ago
      The conversation is about finding the best method to lower scalp prolactine, with suggestions like P5P and Melatonin. The user also mentions HMI115 as a potential treatment and seeks feedback from those who have tried these methods.

      community All Drugs in Clinical Trials in 2023

      in Research/Science  69 upvotes 1 year ago
      12 companies having drugs or therapies in clinical trials during 2023, with various molecules and phases of trial; the probability that some may fail; and progress being made in the field.

      community does lowering your prolactin levels regrow hair?

      in Research/Science  10 upvotes 1 year ago
      The potential of lowering prolactin levels to regrow hair, with a reference to Bayer's drug HMI 115 which has been indicated as having this effect. Treatments mentioned include Minoxidil and Finasteride, as well as RU58841.

      community Spironolactone or bicalutamide prescription

      in Treatment  4 upvotes 1 year ago
      The conversation is about someone seeking a doctor in the EU who prescribes spironolactone or bicalutamide for female pattern hair loss, as they are having difficulty finding treatment options beyond Minoxidil in Austria. They are asking for recommendations and are open to direct messages for assistance.

      community NootBro Recommendations… How Do We Feel

      in Research/Science  9 upvotes 4 months ago
      The conversation is about hair loss treatments, specifically a stack including topical Ashwagandha, Copper Peptide, Gotu Kola, Ketoconazole, and PDA. One user found Topical and Sub-Q GHK-CU effective.

      community Ketoconazole mesotherapy plausible?

      in Ketoconazole  8 upvotes 4 months ago
      The conversation discusses using ketoconazole, an anti-androgen, for hair loss and whether mesotherapy with dermarolling could enhance its absorption into the scalp. The user questions if the typical 2% ketoconazole shampoo dose would be effective when used after dermarolling to target androgen receptors in the scalp.

      community F the big 3, it's just big me!

      in Satire  670 upvotes 5 months ago
      The conversation discusses hair loss treatments, with users mentioning dutasteride (Dut) as effective and wishing for more accessible dosages. They also debate the components of the "big 3" treatments, which now include Dut, RU58841, and oral minoxidil, with finasteride and minoxidil being consistently mentioned.

      community Diagnosed with female pattern hair loss as a male with recent aggressive loss. Preemptively mourning the only part of myself I’ve ever come close to loving. Lost all motivation to do anything with my life.

      in Progress Pictures  271 upvotes 1 year ago
      The conclusion of the conversation is that the user should consider using treatments such as finasteride, minoxidil, and RU58841 to potentially reverse their hair loss. Other suggestions include using hair loss concealers and maintaining a healthy diet.

      community Keeping ru58841 hair gains with only finasteride

      in Finasteride/Dutasteride  13 upvotes 1 year ago
      A user started using RU58841 before finasteride for hair loss and is now considering stopping RU58841 while continuing finasteride. They are asking if others have maintained hair gains from RU58841 after stopping it, but one response suggests it's risky to stop RU58841 if they want to keep their hair gains.

      community where does the renewed spironolactone hype come from?

      in Research/Science  7 upvotes 1 year ago
      Topical spironolactone is gaining attention as an alternative hair loss treatment, but it's not as effective as other options like finasteride. Oral spironolactone can cause side effects in men, and there are better topical alternatives like RU, Pyril, and CB.

      community Looks like a real cure to the root of baldness (DHT-induced senescence) was proven earlier this year

      in Research/Science  743 upvotes 1 year ago
      A study that outlines the full model for androgenic alopecia (AGA) which links DHT to cellular senescence in dermal papilla cells, and suggests black chokeberry as a source of cyanidin 3-O-arabinoside polyphenol with potential anti-oxidant properties that could reverse this process. The post encourages reaching out to experts in anti-aging and longevity to research treatments involving the polyphenol.
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