Testolone RAD140 is a non-steroidal selective androgen receptor modulator (SARM). Medications in this class mimic many of the beneficial actions of anabolic steroids.
The goal is typically to maximize the stimulation of bone and muscle anabolic effects, and to minimize other androgenic side effects, particularly on the prostate.
Testolone is commonly used in the sports community as a muscle building alternative to anabolic steroids.
In vitro studies show that RAD140 has a much higher androgen receptor (AR) binding affinity than testosterone and even dihydrotestosterone. It also seems to promote activity in the muscles and bones.
Testolone RAD 140 does not interact with other steroid hormone receptors to any appreciable degree, other than an interaction