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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  28 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 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.
      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 3 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 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 Who else is looking forward to full phase 2 results of PP405?

      in Chat  59 upvotes 2 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 Will PP405 render Minox and Fin obsolete?

      in Research/Science  26 upvotes 9 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 Pelage PP405 Phase 2a completed.

      in Research/Science  61 upvotes 2 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 4 Month Update on Pyrilutamide

      in Update  11 upvotes 2 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 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 Thoughts on new drug PP405? Already reached phase 2

      in Research/Science  28 upvotes 10 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 4 months into fin, and I’m now attracted to women

      in Satire  239 upvotes 4 months ago
      The conversation humorously discusses the effects of finasteride on sexual orientation and hair improvement, with users joking about its potential to change attraction. It also mentions other treatments like dutasteride and minoxidil, with some users sharing their experiences and side effects.

      community Pp405 phase 2a clinical results

      in Research/Science  38 upvotes 9 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 4 months 0.25 mg finasteride only

      in Progress Pictures  167 upvotes 1 year ago
      A user shared their 4-month progress using 0.25 mg finasteride daily for hair loss, reporting significant improvement and minimal side effects. Other users discussed their experiences with different dosages and side effects.

      community What is next for pp405 in phase 2b?

      in Research/Science  16 upvotes 9 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 DLQ01: A Better "Minoxidil" PGF2a synthetic analogue.

      in Research/Science  3 upvotes 1 year ago
      DLQ01, a prostaglandin F2α analog, shows promise for hair growth by directly stimulating PGE2/PGF receptors without needing conversion, and can be combined with minoxidil and retinoids like tretinoin for enhanced effectiveness. Minoxidil's efficacy may be reduced by COX-1 inhibitors, but using prostaglandin analogs like Latanoprost or Bimatoprost can help maintain its effectiveness.

      community 4 month progress on treatment! Low dose fin.

      in Progress Pictures  179 upvotes 1 year ago
      User shared 4-month progress on hair loss treatment using 0.25mg finasteride daily and topical minoxidil daily, noting cognitive decline possibly linked to finasteride. Users discussed side effects, alternative treatments, and shared similar experiences.