Morpholine refers to domperidone, a drug that promotes gastric motility, but because domperidone is a powerful prolactin-releasing drug, it can be taken with severe adverse effects of breast milk overflow. In the clinic domperidone belongs to the gastric power promoting drugs, which can be used to treat symptoms such as bloating, indigestion, nausea and vomiting due to insufficient gastric power. However, because domperidone can lead to an increase in serum prolactin levels in the patient’s body, so there will be overflow of breasts, feminization of the male breasts and female menstrual irregularities and other adverse reactions, most patients will return to normal after stopping the drug. In addition, a small number of patients may also experience dry mouth, headache, dizziness, drowsiness, lethargy, abdominal cramps, diarrhea, reflux, nausea, heartburn, rash, itching, urticaria, stomatitis, conjunctivitis and other adverse reactions. It is recommended that patients go to the hospital to improve the examination and clarify the condition, and the drug needs to be used under the guidance of a professional physician.