gnc women's ultra mega energy and metabolism 90 caplets pack of 2. total 180 caplets. gnc gnc women's ultra mega energy and metabolism is the premium multivitamin for women who workout regularly. it now includes 1,600 iu of vitamin d-3. emerging research suggests that adequate daily vitamin d-3 intake may play a role in supporting breast, colon and immune health. it provides 500 mg of bone-strengthening calcium. adequate calcium and vitamin d-3 in a healthy diet throughout life may reduce the risk of osteoporosis. it also features key electrolytes including potassium and chloride, which help to regulate body fluids. includes 18 mg of iron, a vital nutrient that plays an essential role in forming healthy red blood cells a transporting oxygen.