Pregnant women who take iron tablets are prone to vomiting may be related to the stimulating effect of iron or gastrointestinal discomfort. 1. Iron stimulation: Iron itself will cause gastrointestinal tract stimulation, which will make pregnant women experience nausea, vomiting and other symptoms. If anemia is found during pregnancy, in order to avoid the impact of iron deficiency on the development of the fetus, you can choose to eat some iron-rich foods, such as pig liver, chicken blood and so on. Or choose to stimulate the less irritating iron supplements, such as protein ferrous succinate. 2. Gastrointestinal discomfort: pregnant women’s gastrointestinal function will be affected with the increase of the uterus, in the early stages of pregnancy may appear to vomit as the main manifestation of early pregnancy reaction, at this time to take iron, may further increase the stimulation of the gastrointestinal tract, leading to the emergence of vomiting symptoms. Therefore, pregnant women are prone to vomiting symptoms after taking iron tablets, generally related to the stimulation of iron itself, gastrointestinal discomfort and other factors, it is recommended that pregnant women with iron supplement needs, you can choose less stimulating iron, usually can eat more iron-rich foods.