Usually, it is recommended to take iron with or after meals. Since iron has a more pronounced gastrointestinal reaction, vomiting, diarrhea, nausea and other symptoms may occur if taken on an empty stomach, it is recommended to take iron with or after meals. Iron is a common nutritional preparation, especially for pregnant women, who may become anemic if they do not pay attention to nutritional supplementation during pregnancy. In addition, it is recommended to take iron along with vitamin C to increase the absorption of iron. In case of anemia, after the anemia is corrected, it is recommended to continue taking it for 3-6 months to replenish the stored iron. It should be noted that iron supplements should not be taken together with strong tea to avoid affecting the efficacy. In addition, patients with iron deficiency can also supplement iron through dietary adjustments, such as jellyfish, shrimp, black fungus, kelp, animal liver, etc., which are rich in iron.