What Is Meclozine?

Meclozine is a medication that a patient may take to help prevent or treat seasickness. It may also help treat vertigo, which is the sensation of spinning that may sometimes result in vomiting. Also known as meclizine, this drug is an antihistamine, which means that it works by interfering with the histamine receptors in a patient's brain. Before using this drug, patients should talk to a doctor or pharmacist about the possible side effects and contraindications.

The specific dosage instructions will vary, depending on the brand of product that the patient selects. In general, to prevent seasickness, the patient should take a dose the evening prior to traveling, or an hour beforehand. If the patient prefers to wait before taking a dose, he may do so as soon as he begins to feel ill. Meclozine may generally be taken with or without food. Some products may be available in chewable tablets, intended to be taken no more than once every 24 hours.

Some side effects may occur with the use of meclozine, which should be reported to a doctor if they become severe. Drowsiness and dry mouth are the most common side effects. Less frequently, patients have also reported blurred vision, heartburn, and constipation. Difficulty passing urine and thickened mucus may also occur. Patients who experience difficulty breathing, tightness in the chest, or swelling of the facial area should seek immediate medical attention, because these symptoms can indicate a possible allergic reaction.

Special precautions should be taken while using meclozine. Patients should avoid consuming alcoholic beverages, because this may increase the risk of certain side effects. This medication is not intended for use by a child younger than two years old. Elderly patients and children are more susceptible to certain side effects. Women who are pregnant or breastfeeding should not use meclozine, unless otherwise instructed by a doctor.

Before using meclozine, patients should disclose their other medical conditions to a doctor or pharmacist. This drug may be contraindicated for use by those with liver disease, kidney disease, or an enlarged prostate. People with difficulty passing urine, or those with a pyloroduodenal obstruction, which is a blockage in the intestinal tract, should use this drug with caution. Meclozine may also be contraindicated for use by those with epilepsy, glaucoma, or asthma, as well as bronchitis and other lung problems.

Patients should also disclose their other medications and supplements. This drug may interact with antipsychotics, tricyclic antidepressants, and other antihistamines. Sleeping pills, narcotics, and barbiturates, as well as benzodiazepines may also interact with meclozine.