What is RAD 140? 

A selective androgen receptor modulator (SARM) known as RAD-140, commonly referred to as Testolone, is being studied to specifically bind to androgen receptors in the body, which can encourage the growth of lean muscle mass and bone density without the negative side effects associated with conventional anabolic compounds. It has been demonstrated that RAD-140 has a high affinity and selectivity for the androgen receptor.