Antivert is an antihistamine that reduces the effects of natural chemical histamine in the body.

Antivert is used to treat or prevent nausea, vomiting, and dizziness caused by motion sickness.

Antivert is also used to treat symptoms of vertigo (dizziness or spinning sensation) caused by disease that affects your inner ear.

Before you take Antivert, tell your doctor if you have liver or kidney disease, asthma, glaucoma, an enlarged prostate, or urination problems.

This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Drinking alcohol can increase certain side effects of meclizine.

Cold or allergy medicine, sedatives, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression or anxiety can add to sleepiness caused by meclizine.

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Use Antivert exactly as directed by your doctor. Follow all directions on your prescription label and read all medication guides or instruction sheets.

To prevent motion sickness, take Antivert about 1 hour before you travel or anticipate having motion sickness. You may take Antivert once every 24 hours while you are traveling, to further prevent motion sickness.

To treat vertigo, you may need to take Antivert several times daily. Follow your doctor's instructions.

This medicine can affect the results of allergy skin tests. Tell any doctor who treats you that you are using this medicine.

Store at room temperature away from moisture, heat, and light.

Usual Adult Dose for Vertigo:

-25 to 100 mg orally per day in divided doses
-Dosing dependent upon clinical response.

Use: Management of vertigo associated with diseases affecting the vestibular system.

Usual Adult Dose for Motion Sickness:

-Initial Dose: 25 to 50 mg orally 1 hour before travel
-Maintenance Dose: Repeat dose every 24 hours if needed

Use: Management of nausea, vomiting, and dizziness associated with motion sickness.

Usual Pediatric Dose for Vertigo:

Age 12 years and older:
-25 to 100 mg orally per day in divided doses
-Dosing dependent upon clinical response.

Use: Management of vertigo associated with diseases affecting the vestibular system.

Usual Pediatric Dose for Motion Sickness:

Age 12 years and older:
-Initial Dose: 25 to 50 mg orally 1 hour before travel
-Maintenance Dose: Repeat dose every 24 hours if needed

Use: Management of nausea, vomiting, and dizziness associated with motion sickness.

You should not use Antivert if you are allergic to meclizine.

Antivert should not be given to a child younger than 12 years old.

Do not give meclizine to a child without medical advice.

To make sure this medicine is safe for you, tell your doctor if you have ever had:

• liver disease;

• kidney disease;

• asthma;

• glaucoma;

• enlarged prostate; or

• urination problems.

Tell your doctor if you are pregnant or breast-feeding.

Since Antivert is sometimes taken only when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Avoid driving or hazardous activity until you know how meclizine will affect you. Your reactions could be impaired.

Drinking alcohol can increase certain side effects of meclizine.

Get emergency medical help if you have signs of an allergic reaction to Antivert: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Common Antivert side effects may include:

• drowsiness;

• dry mouth;

• headache;

• vomiting; or

• feeling tired.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Using Antivert with other drugs that make you drowsy can worsen this effect. Ask your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.

Other drugs may interact with meclizine, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all your current medicines and any medicine you start or stop using.