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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  4 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  29 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.
      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 Similar 5ar inhibitors to fin?

      in Finasteride/Dutasteride 5 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 P5P supplementation for fin sides.

      in Treatment  7 upvotes 4 years ago
      P5P supplementation helped reverse finasteride side effects, particularly by lowering prolactin levels and restoring sensitivity. The user experienced significant improvement within a day and full recovery in a few days.

      community Pyrilutamide for non-5AR users?

      in Treatment  10 upvotes 1 year ago
      Pyrilutamide is considered by some as an alternative for those avoiding 5AR inhibitors like finasteride and dutasteride, but opinions on its effectiveness vary. Some users report similar results with fluridil and pyrilutamide, while others find pyrilutamide less effective compared to prescription treatments.

      community Will PP405 render Minox and Fin obsolete?

      in Research/Science  26 upvotes 1 year ago
      PP405 might make minoxidil unnecessary, but finasteride or other 5AR inhibitors may still be needed. PP405 is expected to be expensive and not available until at least 2028, with limited information on its effectiveness.

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

      in Question  4 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 Fevipiprant 2019!

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

      in Chat  23 upvotes 6 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 5ARI (dutasteride) Associated with Adverse Metabolic Effects

       22 upvotes 8 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 Finasteride affects both 5a reductase and 5b reductase

       6 upvotes 6 years ago
      Finasteride not only inactivates the 5a reductase enzyme but also affects the 5b reductase enzyme in a dose-dependent manner, which can impact sexual behavior and brain activity. The user experienced significant hair regrowth and side effects on 1mg of finasteride, which diminished after reducing the dose to 0.5mg, leading to no side effects and further hair improvement.

      community Pyrilutamide ,the molecule’s true nature

      in Research  302 upvotes 1 year 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 When should we get the next news about PP405

      in Chat  25 upvotes 7 months ago
      Results for PP405 are expected next year, with concerns about its pricing and potential black market availability. Some users believe it may be slightly more effective than finasteride and dutasteride, and combining it with treatments like minoxidil and microneedling could be beneficial.

      community What happened to Pyrilutamide?

      in Technology  1 upvotes 1 year ago
      Pyrilutamide's 0.5% solution showed minimal improvement, while the 1% solution appears more promising but costly. The user is currently using finasteride and oral minoxidil and considering adding Pyrilutamide if effective and affordable.

      community We need actual hair loss studies on Epristeride

      in Research/Science  6 upvotes 1 year ago
      Epristeride is a selective 5 alpha reductase type 2 inhibitor that may reduce scalp DHT similarly to finasteride, with potentially fewer side effects. It is suggested that combining epristeride with finasteride or dutasteride could enhance hair loss treatment effectiveness.

      community Pelage PP405 Phase 2a completed.

      in Research/Science  61 upvotes 4 months ago
      Minoxidil, finasteride, and RU58841 are discussed as treatments for hair loss, with excitement around a new drug, PP405, and a reformulated oral minoxidil in trials. Concerns about cost, side effects, and long-term use are also mentioned.

      community Pp405 full presentation on new topical

      in Product  105 upvotes 3 months ago
      A new topical treatment, PP405, shows promising results for hair regrowth, potentially outperforming existing treatments like finasteride and minoxidil. However, it may still need to be combined with DHT blockers for optimal results, and its long-term effectiveness remains uncertain.