Testolone, or as known by its more popular name, RAD140 is currently one of the most popular selective androgen receptor modulators (SARMs).

What is RAD140

RAD140 (Testolone) is a SARM. SARMs (selective androgen receptor modulators) have gained a lot of popularity over the last few years due to them being seen as a safer alternative to steroids and prohormones. As their name implies, their mechanism is selective and targets particular functions of bone and muscle. In the case of RAD140, it is found to help grow muscle mass and strength.

RAD140 is considered one of the "strongest" SARMs, and due to it being a relatively newly developed there's not a great deal of research available on RAD140.  The research that has thus far been conducted has been positive including possible protection against neurological conditions such as Alzheimer's