Inhibitory Activities of Some Traditional Chinese Herbs Against Testosterone 5α-Reductase and Effects of Cacumen Platycladi on Hair Regrowth in Testosterone-Treated Mice

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.

Hair follicles cannot be desensitized to DHT like allergies; treatments focus on reducing DHT levels or blocking its effects using methods like finasteride, GT20029, or PROTACs. Topical treatments like ceterizine and BPA application are also mentioned.

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.

Natural alternatives like omega-3, green tea, and pumpkin seeds are suggested for reducing DHT levels, but their effectiveness is questioned. Topical minoxidil and ketoconazole shampoo are recommended, with some users also considering low-dose finasteride and saw palmetto.

The user has been using oral minoxidil and dutasteride for hair loss without success and is considering adding topical 17α-estradiol, Pyrilutamide, Clascoterone, or cetirizine. They have confirmed low serum DHT levels and are exploring additional treatments due to genetic sensitivity to DHT and prostaglandin D2.

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.