Decadrol 250 (Nandrolone Decanoate) is considered to be a classic drug for muscle bulk gain. Due to significant retention of water in muscles during the cycle, bulk growth occurs to be significantly faster. Combines well with long esters of testosterone.
Nandrolone Decanoate is a base of mass gaining course; great weight and power growth is what you need during mass gaining period. The drug retains water, can increase the prolactine levels, which is not a positive effect.