Eating stomach medicine body itching consider the possibility of allergy, may be the adverse reaction of the drug, the allergic reaction to the drug and the reaction between the drug and other reasons. 1. Adverse drug reactions: drugs can have known or unknown adverse reactions, itchy body is a more common adverse drug reactions. Itchiness is one of the more common adverse reactions to medication. The probability of adverse reactions is usually greater when overdosing. 2. Allergic reaction to the drug: this situation is more common, the patient is allergic to this kind of gastric medicine or its components, then when taking the body will appear itchy situation. 3. Reaction between drugs: If you take other drugs at the same time, the stomach medicine and other drugs may have a chemical reaction, which produces a chemical substance may have a certain impact on the patient’s body, the body itchy. Eating stomach pills body itching may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.