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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 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 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 Will PP405 render Minox and Fin obsolete?

      in Research/Science  26 upvotes 10 months 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 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 Pp405 phase 2a clinical results

      in Research/Science  40 upvotes 10 months ago
      PP405 shows initial promise for treating androgenetic alopecia, with safety confirmed in early trials, but skepticism remains due to limited data. Further trials are needed to determine its true efficacy and potential market impact.

      community 1 year 5-ar. Blood test results

      in Finasteride/Dutasteride  3 upvotes 9 months ago
      The user experienced sexual side effects after starting finasteride and later switched to dutasteride, noticing hormonal changes. They are considering using P5P and possibly aromatase inhibitors to manage high prolactin and estradiol levels.

      community Similar 5ar inhibitors to fin?

      in Finasteride/Dutasteride 4 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 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 How would you react if PP405 isn't successful in phase 3 trials?

      in Chat  23 upvotes 5 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 When should we get the next news about PP405

      in Chat  25 upvotes 6 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 Thoughts on new drug PP405? Already reached phase 2

      in Research/Science  28 upvotes 11 months ago
      PP405 is a new drug in Phase 2 trials for hair loss, generating cautious optimism among users. Some users are currently using finasteride and experiencing side effects, while others are skeptical about unapproved products being sold.

      community What is next for pp405 in phase 2b?

      in Research/Science  16 upvotes 10 months ago
      PP405 is progressing to Phase 2b trials, with results expected in late 2025 or early 2026, and potential Phase 3 trials in 2026. Some users experienced side effects from finasteride and are hopeful for PP405 as an alternative treatment.

      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 Pp405 full presentation on new topical

      in Product  106 upvotes 1 month 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.

      community P-1075: a BETTER version of Minoxidil

      in Research/Science 6 months ago
      P-1075 is a more potent hair growth agent than Minoxidil, but it poses significant heart risks, making it unsafe for use. Despite promising results in macaques, concerns about its cardiotoxicity in rats have halted its development.

      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 Finasteride affects both 5a reductase and 5b reductase

       7 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 Put P5P in my shampoo, reduced itch a lot!

      in Chat  4 upvotes 3 years ago
      The user added P5P (vitamin B6) to their shampoo to reduce scalp itch, which improved significantly. They have been using finasteride for hair loss but are exploring additional treatments like topical antiandrogens and prolactin inhibitors.