Critical Developmental Periods for Effects on Male Rat Genitalia Induced by Finasteride, a 5α-Reductase Inhibitor

A 17-year-old is using oral dutasteride, finasteride, and topical minoxidil for hair loss, with plans to increase dutasteride and consider surgery. They report significant regrowth but are worried about side effects and the effects of blocking DHT at a young age.

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.

Finasteride may affect prostate sensation and size, with some users reporting easier urination. Concerns exist about prostate shrinkage even at lower doses.

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.

A 30-year-old man experienced significant hair regrowth and improved libido after using finasteride and dutasteride for androgenetic alopecia, with no adverse effects. He plans to reduce dutasteride dosage when trying to conceive and has been using topical minoxidil since 2015.

A 45-year-old male experienced significant hair regrowth using 0.5 mg dutasteride and 1.5 mg minoxidil after initially starting with finasteride. He reports no major side effects, except increased hair growth in unwanted areas, and attributes his success to being a good responder to the medication.