Difenidol Hydrochloride Tablets are generally not recommended for long-term use. Difenidol Hydrochloride Tablets are suitable for the prevention and treatment of symptoms of vertigo, nausea and vomiting caused by a variety of causes or diseases (such as motion sickness when traveling by car, boat or airplane) because they can anti-vertigo and antiemetic. The drug is generally not recommended for long-term use, the poor results of the drug can be timely consultation, the specific use of the drug should also be carried out under the guidance of a specialist. The drug should be contraindicated in people who are allergic to the product, patients with renal insufficiency, infants under 6 months, and cautiously used in patients with gastrointestinal or urinary tract obstructive diseases, patients with tachycardia, patients with glaucoma, pregnant women. Headache, palpitation, dizziness, uneasiness, mild gastrointestinal discomfort, drowsiness, dry mouth and other adverse reactions are common after the use of the drug, usually disappear after stopping the drug.