Effect of Exogenous Testosterone, Finasteride, and Castration on Serum Level of Thyroxin

The conversation discusses concerns about starting finasteride with low testosterone levels, with one person suggesting finasteride might increase testosterone and decrease DHT, and another advising to pay attention to thyroid-stimulating hormone (TSH) levels.

Trans women discuss using finasteride and dutasteride for hair loss and whether to continue after testosterone suppression. One user reduced dutasteride dosage after achieving undetectable testosterone levels.

A 23-year-old male has been using finasteride and topical minoxidil for 14 months with slight improvement, but recent shedding led him to switch to a new minoxidil formulation without success. He is considering using topical RU58841 or dutasteride to better address scalp DHT, as his bloodwork shows high total testosterone and mid-range DHT levels.

An 18-year-old is considering testosterone replacement therapy with finasteride or dutasteride for hair loss but worries about side effects. Users recommend alternatives like minoxidil, RU58841, and consulting a doctor.

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.

Finasteride can increase total testosterone and potentially raise estrogen levels, leading to side effects. Biotin in combined tablets can falsely elevate thyroid hormone levels in blood tests.