Morpholine is commonly known as Domperidone Tablets and is to be taken orally before meals as directed by the physician. The dosage of domperidone tablets varies by age and should be taken orally as directed by the patient’s physician. It is usually taken 15-30 minutes before a meal and absorption may be delayed if taken after a meal. It is indicated for dyspepsia caused by delayed gastric emptying, gastroesophageal reflux, esophagitis, as well as for nausea and vomiting caused by functional, organic, radiotherapy or chemotherapy, and nausea and vomiting caused by the treatment of Parkinson’s disease with dopamine receptor agonists. Headache, insomnia, nervousness, abdominal cramps, reflux, nausea, heartburn sensation, urticaria, female menstrual irregularities and other adverse reactions may occur after use of this product, and most of them can be returned to normal after stopping the drug, and serious cases should seek medical attention promptly. It should be used with caution in pregnant women and lactating women, and is contraindicated in patients with mechanical gastrointestinal obstruction, gastrointestinal bleeding, perforation, prolactinoma, pheochromocytoma, breast cancer, patients with moderate to severe hepatic insufficiency, and those who are allergic to the product. The drug should be avoided in combination with ketoconazole oral preparations, erythromycin and other drugs. Patients who want to use domperidone tablets are advised to go to a regular hospital, consult a professional doctor, cooperate with the doctor to complete the relevant examinations, and avoid blind use of drugs.