Difenidol Tablets, namely Difenidol Hydrochloride Tablets, the instructions dosage recommended for adults oral 25-50mg/times, 3 times/day, the specific use of medication as prescribed by the doctor. Difenidol Hydrochloride Tablets have anti-vertigo and antiemetic effects, and are suitable for use in the prevention and treatment of vertigo, nausea and vomiting caused by a variety of causes or diseases (such as motion sickness when traveling in a car, boat or airplane, etc.). The specification of the drug is often 25mg/tablet, and when adults use it for the treatment of motion sickness, it is recommended to take 1 or 2 tablets orally at a time, 3 times a day; when used as a preventive medication against motion sickness, the drug should be taken 30 minutes before departure. Contraindications include hypersensitivity to the product, infants under 6 months of age, patients with renal insufficiency, and people with caution include patients with tachycardia, patients with glaucoma, patients with gastrointestinal or urinary tract obstructive diseases and pregnant women. Common adverse reactions include palpitations, dizziness, headache, drowsiness, dry mouth, uneasiness and mild gastrointestinal discomfort, which usually disappear after stopping the drug. Specific medication should be used under the guidance of a specialist, and should not be used without authorization.