RAD-150, also known as RAD-140, is a selective androgen receptor modulator (SARM). It’s often used in the bodybuilding and fitness community for its potential to increase muscle mass and strength. However, it’s important to note that the use of SARMs for performance enhancement is controversial and can have potential side effects. It’s advisable to consult with a healthcare professional before using RAD-150 or any other SARM.