Inhibitory Effects of Pueraria Mirifica Aqueous Extracts on 5α-Reductase and Prostate Histomorphometry in Testosterone-Induced Benign Prostatic Hyperplasia Sprague Dawley Rats

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.

Saw palmetto, a 5-alpha reductase inhibitor, caused unexpected side effects like breast changes and altered semen consistency, which resolved after stopping its use. Concerns about similar side effects with finasteride or dutasteride were expressed, and another user reported low libido and depression from saw palmetto.

He Shou Wu (Fo Ti) extract was found to prolong the hair growth phase, inhibit 5-alpha-reductase (like finasteride), reduce androgen receptors, and increase growth factors, potentially outperforming minoxidil in recovering hair follicle size after DHT exposure. Two compounds, emodin and TSG, are identified as responsible for these effects and warrant further investigation.

The conversation discusses the use of 5-alpha-reductase inhibitors like finasteride and dutasteride for hair loss in transgender women, particularly in relation to testosterone suppression. The original poster has been using dutasteride and is considering stopping it due to undetectable testosterone levels.

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.

PP405 shows promising results for hair growth, potentially outperforming finasteride without side effects like erectile dysfunction. Users discuss using treatments like minoxidil, pyrilutamide, nizoral, and alfatradiol while waiting for PP405's availability.