The symptoms of nausea and vomiting after taking ferrous succinate tablets are mainly considered to be caused by drug reactions, because ferrous succinate tablets contain hydroxypropyl methylcellulose, magnesium stearate, talc and other ingredients, which can have stimulating effects on the human stomach, intestines and other digestive tract tissues, and induce contractile spasm of local smooth muscle, so some patients taking them may experience nausea, vomiting, abdominal pain and other Some patients may experience nausea, vomiting, abdominal pain and other adverse gastrointestinal reactions. In addition, these drugs can inhibit bowel movement, so some users may also have symptoms such as poor bowel movement and dry stools. You can choose to take the drug after or during meals to effectively reduce the effect of stimulation on the gastrointestinal tissues and reduce the degree of adverse symptoms and reactions. It is recommended to go to the hospital for a face-to-face consultation and examination, and then give symptomatic treatment according to the actual condition.