RAD-140 or Testolone, builds muscle and burns fat. RAD-140 is one of the best-studied SARMs, with multiple published human trials. It is proven to be more anabolic than testosterone, without associated side effects, and blocks the effects of estrogen on tissues. RAD has been shown in studies to be effective at as little as 5mgs/day and can be tolerated at doses as high as 150mg/day.