Durabolin (Nandrolone)® is a muscle enahancer that is very needed in cutting and bulking cycles. Oregon Labs brand is called Dura 50 which helps you keep the muscle that you gained after a cycle. This product is a must for those seeking pure muscle build-up and a more solid look. You will be very pleased with Dura-50 caps. Novices and less advanced achieve rapid strength and pure muscle gain quick. Dura 50 causes the muscle cell to store more nitrogen than it releases so that a positive nitrogen balance is achieved.
Endocrine side effects have included inhibition of endogenous testosterone release by means of feedback inhibition of pituitary luteinizing hormone (LH). Large doses of exogenous anabolic steroids may suppress spermatogenesis through inhibition of pituitary follicle stimulating hormone (FSH). The androgenic activity of anabolic steroids may decrease levels of thyroxin-binding globulin and result in decreased total T4 serum levels and increased resin uptake of T3 and T4. Free thyroid hormone levels remain unchanged and there is no clinical evidence of thyroid dysfunction. [ Ref ]