Difenidol Hydrochloride Tablets have the efficacy of anti-vertigo and antiemetic, mainly used for motion sickness and so on. Difenidol Hydrochloride is widely used in otorhinolaryngology, neurology, and has good efficacy and preventive effect on vertigo diseases, and can be used for vertigo, nausea, vomiting and motion sickness caused by various reasons. The common adverse reactions of Difenidol Hydrochloride Tablets include dry mouth, palpitations, dizziness and headache, drowsiness, gastrointestinal discomfort, etc. A few patients may also suffer from hallucinations, disorientation, psychiatric disorders, skin rashes, and transient hypotension. Difenidol Hydrochloride Tablets are contraindicated in patients who are allergic to the components of the drug, contraindicated in infants under 6 months of age and patients with renal insufficiency; used with caution in patients with glaucoma, gastric ulcers, urinary tract obstruction, sinus tachycardia. Patients who need to use Difenidol Hydrochloride Tablets are recommended to consult a professional physician and follow the doctor’s instructions for standardized treatment.