How long can iron deficiency anemia patients take ferrous succinate to improve their anemia is related to the degree of anemia of the patient and cannot be generalized, most patients can take effect in 1-2 weeks. Ferrous succinate is an oral iron supplement commonly used in clinical practice and is generally recommended to be taken immediately after meals to reduce intestinal irritation. If the patient’s anemia is mild, after taking ferrous succinate, some patients can have certain effect after 1 week of rechecking blood routine. However, some patients may not have significant changes in the routine blood tests, at this time, there is no need to be nervous, you can continue to insist on taking it, usually after 2 weeks, the reticulocyte count can show an increase, which can gradually improve the anemia. If the patient has been anemic for a long time, the hemoglobin will gradually rise only after taking this drug for a longer period of time. In addition, drinking tea while taking ferrous succinate can affect the absorption of iron. Therefore, patients should avoid drinking tea while taking iron, while vitamin C can promote the absorption of iron and can be applied along with it.