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Meclizine

What is meclizine

Meclizine is an antihistamine. It blocks the effects of the naturally occurring chemical histamine in your body.

Meclizine is used to treat nausea, vomiting, and dizziness associated with motion sickness. Meclizine may also be helpful in treating vertigo.

Meclizine may also be used for purposes other than those listed in this medication guide.

General medical information about meclizine

Use caution when driving, operating machinery, or performing other hazardous activities. Meclizine may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness, or blurred vision, avoid these activities.

Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking meclizine.

What you should find out before taking meclizine

Before taking meclizine, tell your doctor if you have:
- asthma, bronchitis, emphysema, or another lung disease;
- glaucoma;
- difficulty urinating or an enlarged prostate gland; or
- severe or chronic constipation.

You may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.

Meclizine is in the FDA pregnancy category B. This means that it is not expected to harm an unborn baby. Do not take meclizine without first talking to your doctor if you are pregnant.

It is not known whether meclizine passes into breast milk. Do not take meclizine without first talking to your doctor if you are breast-feeding a baby.

Meclizine is not approved for use by children younger than 12 years of age.

How should take meclizine

Take meclizine exactly as directed by your doctor or follow the directions that accompany the package. If you do not understand these instructions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass of water.

The Bonine chewable tablets may be swallowed whole, crushed, or chewed.

For motion sickness, meclizine is usually taken about 1 hour before travel. The dose may be repeated once a day after that for the duration of the journey if necessary.

For vertigo, doses may be taken several times a day. Follow your doctor's instructions.

Store meclizine at room temperature away from moisture and heat.

If you miss a dose:

Since meclizine is usually taken as needed, missing a dose is usually not a problem. If you are taking meclizine on a regular schedule and you miss a dose, take the missed dose as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take only your next regularly scheduled dose. Do not take a double dose of this medication.

What happens if you overdose:

Seek emergency medical attention.

Symptoms of a meclizine overdose include extreme drowsiness, seizures, hallucinations, and decreased breathing.

Avoid while taking meclizine

Use caution when driving, operating machinery, or performing other hazardous activities. Meclizine may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness, or blurred vision, avoid these activities.

Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking meclizine.

Possible side effects of meclizine

Stop taking meclizine and seek emergency medical attention if you experience an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives).

Other, less serious side effects may be more likely to occur. Continue to take meclizine and talk to your doctor if you experience
- drowsiness or dizziness;
- a dry mouth (may be relieved by sugarless gum, ice chips, saliva substitutes, or other products if bothersome);
- blurred vision;
- nervousness;
- insomnia; or
- constipation.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

What other drugs will affect meclizine

Meclizine may increase the effects of other drugs that cause drowsiness, including antidepressants, alcohol, antihistamines, sedatives (used to treat insomnia), pain relievers, anxiety medicines, and muscle relaxants. Tell your doctor about all prescription and over-the-counter medicines that you are taking, and do not take any medicine without first talking to your doctor.

Meclizine may affect skin allergy tests. Tell your doctor that you are taking this medication if you need to undergo allergy testing.

Drugs other than those listed here may also interact with meclizine. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

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B
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C
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D
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G
gabapentin gamimune gemfibrozil gemzar glipizide glucophage glucotrol glucovance glyburide glyburide guaifenesin guaifenex 
H
herceptin humalog humira hydroxyzine hyzaar  
I
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K
kaletra keflex kenalog keppra ketek klonopin kytril  
L
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M
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S
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T
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X
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