Each "GP Test Cyp 250" milliliter contains 250mg of Testosterone Cypionate. GP Test Cyp 250 is available in a 10ml multi dose vial. GP Test Cyp 250 is given to men whose body does not produce testosterone or does not make sufficient amounts of it. The drug contains testosterone, the male sex hormone. GP Test Cyp 250 gives the body the needed testosterone or replaces the one made in the body.