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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 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 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 Thoughts on new drug PP405? Already reached phase 2

      in Research/Science  28 upvotes 1 year 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 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 Upcoming Setipiprant clinical trials hint at systemic daily dosage

       22 upvotes 10 years ago
      The conversation discusses the safety, tolerability, and efficacy of oral Setipiprant tablets for treating androgenetic alopecia compared to finasteride. It mentions the high cost of Setipiprant on the black market and the trial's end date in September 2017.

      community Who else is looking forward to full phase 2 results of PP405?

      in Chat  59 upvotes 4 months ago
      PP405 is a potential hair loss treatment showing promise, especially for men with severe balding. Some are hopeful it will be a game-changer for those who cannot tolerate finasteride or minoxidil, despite skepticism about the outcomes.

      community 4 Month Update on Pyrilutamide

      in Update  11 upvotes 3 years ago
      Hair loss treatment with Pyrilutamide, Minoxidil, and Finasteride showed improvement after 4 months. Shedding reduced, hair feels stronger and healthier, with no side effects.

      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 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 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 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 VDPHL01 phase-2/3 results comparison

      in Research/Science  128 upvotes 1 month ago
      The conversation discusses hair loss treatments, focusing on a new slow-release oral minoxidil compared to topical minoxidil and finasteride. The results show that twice-daily dosing of the new treatment is slightly more effective than once-daily, but concerns about cost, side effects, and the accuracy of reported results remain.

      community What’s the update on Pyrilutamide?

      in Chat  12 upvotes 3 years ago
      Pyrilutamide is seen as a last hope for those who can't take finasteride, with promising results reported. However, there's uncertainty about the quality and consistency of Pyrilutamide from black market sources.

      community Pp405 phase 2a clinical results

      in Research/Science  40 upvotes 11 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 I'm very skeptical about pyrilutamide

      in Product  2 upvotes 4 months ago
      Pyrilutamide's effectiveness is questioned due to overstated claims and previous trial ineffectiveness, with some users opting for finasteride instead. Despite skepticism, some consider adding pyrilutamide to their regimen alongside treatments like bicalutamide.

      community Pp405 full presentation on new topical

      in Product  105 upvotes 2 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.