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    Did you mean Phosphodiesterase Inhibitors?
    GlossaryPhosphodiesterase Inhibitors

    block enzymes that break down cyclic nucleotides

    Phosphodiesterase Inhibitors (PDE Inhibitors or PDEIs) are a class of drugs that block the action of phosphodiesterase enzymes, which are responsible for breaking down cyclic nucleotides like cAMP and cGMP. By inhibiting these enzymes, PDE inhibitors can increase the levels of these cyclic nucleotides, leading to various therapeutic effects such as vasodilation, anti-inflammatory actions, and improved cardiac function. These drugs are used to treat conditions like erectile dysfunction, pulmonary hypertension, and certain types of heart failure.

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      community Does caffeine inhibit 5-α-reductase?

      in Treatment  5 upvotes 6 years ago
      Caffeine may promote hair growth and potentially inhibit 5-α-reductase activity in hair follicles, but its effectiveness and systemic impact remain unclear. Users discuss using topical caffeine solutions, with some experiencing no side effects compared to finasteride.

      community Could creatine trigger faster hairloss?

      in Research/Science  31 upvotes 1 year ago
      Creatine is reported by many to increase hair loss, though no scientific evidence supports this. Some use finasteride and minoxidil to manage hair loss, while others avoid creatine due to personal experiences.

      community PYRILUTAMIDE PHASE 3 RESULTS : No statistical significance

      in Research/Science  124 upvotes 2 years ago
      The phase 3 trial results for Pyrilutamide showed no significant difference from the control treatment in increasing hair count, leading to the company halting its development. Users discussed their disappointment and skepticism about hair loss treatments, with some mentioning other treatments like Minoxidil, Finasteride, and RU58841.

      community How would you react if PP405 isn't successful in phase 3 trials?

      in Chat  23 upvotes 4 months ago
      People are discussing their reactions if PP405 fails in phase 3 trials, with some expressing skepticism and others holding onto hope for future treatments like GT20029 and Breezula. Many mention continuing with existing treatments like minoxidil and finasteride, while others express disappointment and consider alternative solutions.

      community Why doesn't phase 3 of PP405 start straight away?

      in Chat  14 upvotes 3 months ago
      Pelage is delaying the start of phase 3 trials for PP405 to 2026 due to necessary regulatory processes, despite having $120 million in funding. Users discuss the potential of PP405 for hair regrowth, with some expressing skepticism and others hopeful for new treatments like Breezula.
      FCE 28260: A Forgotten 5α-Reductase Inhibitor

      community FCE 28260: A Forgotten 5α-Reductase Inhibitor

      in Research  330 upvotes 1 year ago
      FCE 28260 (PNU 156765), an under-explored 5α-reductase inhibitor, showcases promising results in research by Giudici et al., outperforming well-known treatments like Finasteride in reducing the conversion of testosterone to DHT. Its superior efficacy, demonstrated through lower IC50 values in both natural and human recombinant enzyme studies, suggests it could offer more effective management of DHT-related conditions. Additionally, its lower molecular weight hints at better potential for topical application, potentially offering advantages in treating conditions such as androgenic alopecia. Despite its potential, it has not advanced in development, possibly due to financial limitations, leaving its therapeutic prospects and side effect profile largely unexplored.

      community Pyrilutamide Phase 3 on its way

      in Treatment  126 upvotes 4 years ago
      Pyrilutamide Phase 3 approved, starting early 2022 with 416 subjects for 24 weeks. Drug potentially better than RU and Breezula, with some users reporting no side effects.

      community New Hair Loss Cure: AMP-303 Is Back. It’s what PP405 should have been.

      in Research/Science  1 upvotes 1 week ago
      AMP-303 and AMP-601 are new hair loss treatments targeting dermal papilla cells, with AMP-303 showing early efficacy in transitioning vellus hairs to terminal hairs after one injection. Further clinical trials are planned, and these treatments are seen as promising due to their biologic approach and less frequent application compared to daily treatments.

      community Phase 3 of pyrilutamide (kx-836) analysis of the efficacy

      in Research/Science  11 upvotes 2 years ago
      The conversation discusses the less impressive results of Pyrilutamide (kx-836) in phase 3 compared to phase 2, with a suggestion that a longer study might show more significant results. One user reports personal success with Pyrilutamide, experiencing no further hair loss and gradual regrowth.

      community Does anyone know of the actual effectiveness of the DP2 inhibitors?

      in Question  5 upvotes 8 years ago
      Setipiprant and Fevipiprant are questioned for their effectiveness in hair maintenance, with skepticism due to lack of convincing results beyond vellus hair growth. The user is satisfied with Minoxidil and Finasteride but is curious about the potential of DP2 inhibitors.

      community Pyrilutamide Trial Phase 3 Results?

      in Research/Science  10 upvotes 2 years ago
      The conversation is about the release of Phase 3 trial results for pyrilutamide in China for treating hair loss. The user is inquiring if the actual results have been posted, noting that a recent release did not contain them.

      community Pyrilutamide phase III clinical trial results released

      in Research/Science  31 upvotes 2 years ago
      Pyrilutamide did not show effectiveness in regrowing hair compared to a placebo, but it may still help maintain existing hair by preventing DHT from causing follicle miniaturization. Some users believe it could be beneficial when used with other treatments like minoxidil, finasteride, and dutasteride.

      community Fevipiprant 2019!

       18 upvotes 9 years ago
      The conversation discusses Fevipiprant, an asthma drug that may block CRTH2 and potentially stop male pattern baldness (MPB) without inhibiting DHT. It also mentions the use of finasteride and dutasteride for hair loss.

      community pyrilutamide solution progress log

      in Product  20 upvotes 3 years ago
      A 28 year old using a hair loss prevention protocol to restore thinning hair, which includes finasteride, dutasteride, minoxidil, stemoxydine, alopecin, nizoral shampoo and microneedling; the user is now adding pyrilutamide solution to the regimen with the hope of improving their results. RU58841 was also ordered but not yet used.

      community Why are there no proper phase 3 trials for RU

      in Chat  4 upvotes 3 weeks ago
      RU58841 lacks FDA approval due to financial and safety concerns, including potential cardiological side effects. The company abandoned further research, and users report adverse effects like heart palpitations and gynecomastia.

      community The New, Improved CB-03-01/Setipiprant Group Buy

       27 upvotes 9 years ago
      The group buy for CB-03-01, a topical anti-androgen for hair loss, was postponed and refunded due to issues with the product's form and solubility. The product, also known as Breezula, is an alternative to finasteride with fewer side effects, but its official release is delayed until 2021.

      community Pelage are going to do two phase 3 trials for PP405. How long will it take to complete two phase 3 trials?

      in Chat  45 upvotes 3 months ago
      Pelage plans to conduct two Phase 3 trials for PP405, a new hair loss treatment, which may take about a year to complete. Users discuss various hair loss treatments, including pyrilutamide, minoxidil, finasteride, and clascoterone, with some expressing impatience over the lengthy trial process compared to faster drug approvals like the COVID vaccine.