Morpholine refers to domperidone tablets and has some side effects. Domperidone tablets are gastrointestinal stimulants that are used to treat symptoms such as indigestion, bloating, nausea, vomiting, and flatulence. There are some side effects associated with this medication, which may include dry mouth, headache, insomnia, nervousness, dizziness, drowsiness, lethargy, diarrhea, abdominal cramps, nausea, and heartburn, and in some patients, allergies, which can lead to rashes, itching, and hives. Patients using domperidone tablets may also experience elevated serum prolactin levels, leading to breast overflow, men may experience breast feminization, and women may experience menstrual irregularities. Severe ventricular arrhythmias and even sudden cardiac death may occur if the drug is overdosed or in patients with concomitant heart disease and tumors receiving chemotherapy. Domperidone tablets should be consulted with a physician or pharmacist if the symptoms are not relieved after three days of use, and it is recommended that they be used under medical supervision to avoid adverse reactions.