Testolone is currently the subject of research by Radius Health, a pharmaceutical company. It has proven to be effective as a steroid-like drug but without the expected side effects. In terms of potency, Testolone can work in your body in as little as 6 to 7 weeks to gain 8 to 19 lbs. It is one of the fastest-acting and efficient supplements formulated for bodybuilders who want to build enhanced muscle mass, testolone trt. For instance, if you were through go for a fat loss phase, it would be a wise idea to use something to increase the retention of muscle tissue, whilst using another product to potentially increase your metabolism, testolone trt.