Meclizine 25 mg (milligrams) is a generic medication to treat symptoms of motion sickness—nausea, vomiting and dizziness—and is available as a chewable tablet or capsule.Meclizine 25 mg is available by prescription, under the brand name Antivert, or over the counter (Bonine). If you are predisposed to motion sickness, the Mayo Clinic recommends taking 25 to 50 mg of meclizine approximately one hour prior to travel2. Thereafter, the dose may be repeated every 24 hours as needed.

Common Side Effects

Drugs.com reports common side effects of meclizine include dry mouth, drowsiness and in rare instances, blurred vision1. For temporary relief of dry mouth side effects, saliva substitutes, sugar-free candy or gum and bits of ice may prove helpful. Contact a physician for questions or concerns about side effects. You may also report side effects to the FDA at 1-800-FDA-1088.

Central Nervous System Effects

Always consult with a physician prior to taking this medication, especially if you are taking medications that depress the central nervous system (CNS).CNS depressants may make you drowsy and less alert. The Mayo Clinic lists such depressants as antihistamines, allergy or cold medicines, sedatives, sleeping medicine, narcotics and pain medicine, muscle relaxants and anesthetics.

Other Considerations

Consumption of alcohol is not recommended while taking this medication, as it may increase drowsiness and dizziness. Do not drive or operate machinery before understanding how your body reacts to this medication. If you are pregnant, nursing or elderly, consult with a physician prior to taking this medication.