I personally think Nandrolone Decanoate its a bad choice, its a progestin , very suppressive and a long ester, if you have sides with it you will be with them for a long time , some guys loose their libido for more that 3 months after the last shot, even if you run test with it nothing assure that when you finish the cycle the sides are gone cause deca metabolites can stay in the body for a long time, scary stuff.
Don't get me wrong nandrolone have also good things, like the positive effect on joints and low androgenicity and a very good anabolic but if you want to run it search for a short ester(Nandrolone Phenylpropionate), its better and faster to recover if you have sides, with all the benefits of the long ester