Each “GP Deca 250” milliliter contains a 250mg of Nandrolone Decanoate. GP Deca 250 is available in a 10ml multi dose vial. GP Deca 250 is a type of anabolic steroid medicine. This group of steroids is closely related to the male sex hormone called testosterone. The mission of anabolic steroids is to help the tissues that is weak due to some illness or injury, to regenerate itself. In combination with anabolic steroids, doctors usually also require a higher-calorie and higher-protein diet to be followed. Deca 250 is prescribed to postmenopausal patients with osteoporosis. Moreover, it is also often prescribed when treating certain aplastic anemias.