A final note, controlling excess water retention is very important. If excess water retention gets out of hand it can have a negative impact on blood pressure. Anadrol carries with it some strong Decabolin related side effects despite its rather low androgenicity, Nandrolone Decanoate. The androgenic side effects of Anadrol can include acne, accelerated hair loss in those predisposed to male pattern baldness Nandrolone Decanoate body hair growth.