Anemia is a state in which there are too few blood red blood cells or hemoglobin to adequately deliver oxygen to the tissues. Maintaining normal hemoglobin function requires several vitamins at appropriate levels, the most important of which are vitamin A, folic acid, vitamin B12, and vitamin C. Vitamin A. According to studies, there is a positive correlation between vitamin A and hemoglobin levels, and a daily supplement of 240 retinol equivalent of vitamin A can significantly increase hemoglobin concentration. 2, Folic acid. Folic acid is widely distributed in green leafy plants, and lack of folic acid is the main cause of megaloblastic anemia. It is recommended at 180-200 micrograms per day for adults, doubled for pregnant women, and 280 micrograms per day for the first 6 months and 260 micrograms per day for the next 6 months for lactating women. Vitamin B12 deficiency can also cause megaloblastic anemia. In severe cases, it can lead to extensive neurological damage. The best dietary source of vitamin B12 is meat, and the amount in plants is not very high. If the drug is taken orally, 25 mg is taken three times a day. Vitamin C deficiency is associated with many types of anemia. vitamin C promotes the absorption of iron from the gastrointestinal tract and the utilization of stored iron in the body, and also activates the enzymes necessary to help convert dietary folate into active folate. The vitamin C requirement of each individual varies greatly. The general recommended intake of vitamin C for adults and women in early pregnancy is 100 mg daily.