Finasteride Inhibits Epinephrine Synthesis in Humans: Implications for Sexual Dysfunction

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.

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.

The user tried minoxidil 5% for 3 years with little improvement, then switched to a 15% minoxidil with 0.1% finasteride solution once daily and started using pyrilutamide, resulting in significant hair regrowth over time. They are considering a hair transplant but are continuing with topical treatments to maximize hair growth first.

Finasteride's effectiveness and side effects may vary based on male phenotypes, with some users noting differences in response related to body and facial hair characteristics. Some users report success with lower doses, while others experience side effects, suggesting individual variability in response to the treatment.

The conversation is about managing allopregnanolone deficiency caused by 5-alpha-reductase inhibitors like finasteride or dutasteride. Specific treatments discussed for hair loss include Minoxidil, finasteride, and RU58841.

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.