What is "trestolone"

n. A synthetic androgen.

Trestolone ( INN), also known as (7α,17β)-normethandrone or as 17β-hydroxy-7α-methylestr-4-en-3-one, is a synthetic, steroidal androgen taken to build muscle rapidly, and is a theoretical candidate drug for use in hormonal male contraceptive methods. In males, regular administration of sufficient quantities of trestolone induces a state of temporary infertility.

Trestolone is an experimental contraceptive treatment and is not yet available commercially. It is currently being evaluated for safety and effectiveness in scientific studies, supported by the Population Council.