Difenidol tablets are an anti-vertigo over-the-counter medication. There are motion sickness patches on the market for the treatment of motion sickness and seasickness, and the main ingredient is also difenidol. The indications are mainly for vertigo, nausea, vomiting caused by various reasons or various diseases, or motion sickness caused by car, boat or airplane rides. There will be certain side effects, such as common dry mouth, panic, dizziness, headache, and gastrointestinal discomfort symptoms, and most patients will disappear after stopping the medication. Be sure to use it according to the correct usage and avoid taking more than one dose, which is prone to a higher incidence of adverse reactions. People with frequent motion sickness or seasickness can also have their vestibular function tested at the hospital. If more sensitive vestibular function exists, treatment with vestibular adsorption exercises can be performed.