Although Nandroxyl is not an optimal steroid when preparing for a competition, many athletes also achieve good results during this phase. Since Nandroxyl 250 is a long-term anabolic, there is risk that with a higher dosage, the competing athlete will retain too much water. A conversion into estrogen, that means an aromatizing process, is possible with Nandroxyl 250 but usually occurs only at a dose of 400 mg/week. During competitions with doping tests Nandroxyl 250 must not be taken since the metabolites in the body can be proven in a urine analysis up to 18 months later.
It is important to note that Deca by no means provides rapid and fast muscle gains, and many users frequently report noticeable steady muscle gains but not dramatic. Various factors lend to this, one of which is the issue of the very long Decanoate ester which serves to cause Nandrolone to have a very slow release and therefore a slow biological action in the body, which results in significant but slow and steady gains. Many tend to state that with Deca Durabolin, the expected gains often occur at approximately half the normal rate of Testosterone at an equal dose. It is important to remember that it has been mentioned that Nandrolone does not possess an anabolic effect that much stronger than Testosterone , although it is still stronger than Testosterone by a small amount.