Adequate intake of calories, protein, iron, calcium, zinc, iodine, selenium, potassium and other trace elements are needed during pregnancy to avoid anemia, twitching and numbness of hands and feet, etc. Pregnant women should also take oral multivitamins: such as vitamin A, which mainly prevents night blindness and anemia; vitamin B, which is mainly involved in the metabolism of carbohydrates such as protein and calories; vitamin C, which enhances immunity and avoids bleeding gums; vitamin D, which mainly promote the absorption of calcium. A variety of nutrients are combined with DHA supplementation to help the healthy development of the mother and fetus.