By only binding to muscle and bone and not sebaceous glands or hair follicles, by not being converted to DHT or estrogen this is the most powerful and efficient way of building side effect free muscle. It is purely anabolic and completely side effect free. The only risk is that there may be some mild natural test shut down with cycles over 4 weeks, however the time between cycles are only 4 weeks. In clinical trials 6 pounds of muscle were gained in 4-6 weeks of use with 25mg. While this may not seem impressive, this is rock hard muscle, not a mixture of water, fat and muscle like most wet bulking agents like D-Bol, M-drol , Anadrol, or testosterone.
Results wise, users should expect extreme strength increases and weight gain in a relatively short 2-4 week period. Weight gain upwards of 20lbs in 4 weeks is not unheard of with this incredibly potent compound. Although subcutaneous water gain would be minimal, intramuscular water retention should be expected. This is due to inhibition of 11b-hydroxylase and build-up of mineralcorticoids which encourage salt and water retention within the muscles. The most obvious physical effects will be improved vascularity, aggressive muscular pumps, and oily skin.
While methyldrostanolone can stack well with most other steroids, it should never be stacked with another methylated (17aa) steroid.