Do NOT use Antivert if:

• you are allergic to any ingredient in Antivert
• you are taking sodium oxybate (GHB).

Contact your doctor or health care provider right away if any of these apply to you.

Some medical conditions may interact with Antivert. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• you have asthma; chronic obstructive pulmonary disease (COPD); chronic bronchitis or emphysema; blockage of the stomach, intestine, or urinary tract;enlargement of the prostate; or glaucoma.

Some medicines may interact with Antivert. Tell your health care provider if you are taking any other medicines, especially any of the following:

• Sodium oxybate ( GHB) because an increase in sleep duration and a decrease in the ability to breathe are likely to occur.

This may not be a complete list of all interactions that may occur. Ask your health care provider if Antivert may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

Important safety information:

• Antivert may cause drowsiness or blurred vision. This effect may be worse if you take it with alcohol or certain medicines. Use Antivert with caution. Do not drive or perform other possible unsafe tasks until you know how you react to it.
• Do not drink alcohol or use medicines that may cause drowsiness (eg, sleep aids, muscle relaxers) while you are using Antivert; it may add to their effects. Ask your pharmacist if you have questions about which medicines may cause drowsiness.
• Antivert should not be used in children younger than 12 years old; safety and effectiveness in these children have not been confirmed.
• Pregnancy and breast-feeding: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Antivert while you are pregnant. It is not known if Antivert is found in breast milk. If you are or will be breast-feeding while you use Antivert, check with your doctor. Discuss any possible risks to your baby.

All medicines may cause side effects, but many people have no, or minor, side effects.

Check with your doctor if any of these most common side effects persist or become bothersome:

Drowsiness; dry mouth.

Seek medical attention right away if any of these severe side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue).

 This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.