Eating stomach medicine stool black may be caused by stomach medicine containing bismuth, iron, may also be caused by the recent consumption of food such as pig’s blood or gastrointestinal bleeding, the patient needs to promptly seek medical attention to identify the cause, and then according to the cause of treatment. Common causes and treatment 1, drug impact: If the stomach medicine taken contains gum secret, iron, such as bismuth citrate, ferrous sulfate and other drugs, during the period of taking bismuth citrate potassium, the mouth may have an ammonia taste, and tongue, stool can be dyed black, generally after stopping the drug symptoms can gradually disappear, without special treatment; 2, food impact: when taking stomach medicine at the same time consumed some black food, blood products or animal offal, such as mulberry, pig blood, duck liver, etc., can lead to the appearance of black stool, which is a normal phenomenon, when no longer consume the above-mentioned food, the black stool will gradually disappear; 3, gastrointestinal bleeding: if the stool continues to black, and accompanied by abdominal pain, bloating, dizziness, weakness, palpitations and other uncomfortable symptoms, you need to be alert to the presence of gastrointestinal bleeding, you need to go to the hospital to improve the gastroscopy, enteroscopy, etc. Once the diagnosis of gastrointestinal bleeding is confirmed, bed rest and fasting should be performed, and endoscopic treatment or interventional treatment can be chosen. Attention Patients with gastrointestinal disease should pay attention to dietary hygiene, eat easy-to-digest foods such as rice soup and noodle soup, and take less drugs that are irritating to the stomach. In addition, fresh vegetables and fruits help the body to replenish vitamins, and hard, irritating foods such as chili peppers and nuts should be avoided. Exercise properly, combine work and rest, and keep a happy spirit.