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What Are the Different Meclizine Side Effects?

By Meshell Powell
Updated Mar 03, 2024
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Meclizine is a type of antihistamine that also works to prevent nausea, vomiting, and motion sickness. Some of the most common meclizine side effects include drowsiness, headache, and blurred vision. Some people taking this medication may experience additional symptoms. such as increased appetite, weight gain, or nausea. Some of the more serious potential meclizine side effects may include irregular heartbeat, confusion, or seizures. In rare cases, a potentially fatal allergic reaction may occur when taking meclizine, even if this medication has been well tolerated in the past.

Drowsiness is among the most commonly reported meclizine side effects. The over-the-counter version may not cause as much drowsiness as the prescription form. Dry mouth or blurred vision may also occur, although these side effects are usually mild. Some patients may experience an increase in chest mucous, sometimes requiring additional medications to treat this side effect. Gastrointestinal disturbances such as nausea, vomiting, or diarrhea have been reported as meclizine side effects as well.

Some of the more serious side effects should be reported to a doctor right away for further medical evaluation. These may range from mild to severe and may include cardiac issues such as an irregular heart rate or heart palpitations. Some patients may become confused or have seizures. It is also possible to develop difficulty when trying to urinate as a result of taking this medication.

Some medical conditions may become worse when taking meclizine. Those with gastrointestinal problems such as gastroesophageal reflux disease or stomach ulcers may notice a worsening of symptoms when taking this medication. Glaucoma may worsen, leading to permanent visual disturbances. Any questions or concerns about the various types of meclizine side effects or how to deal them should be discussed with a doctor or other medical professional.

In some cases, a severe allergic reaction may develop as one of the most serious meclizine side effects. Symptoms that may indicate that an allergic reaction is taking place include itching, facial swelling, and difficulty breathing. This should be treated as a medical emergency, as a severe allergic reaction can cause death if not treated immediately. Hospitalization is usually required until the patient's health stabilizes. Anyone who has had an allergic reaction to medication will generally be given an injectible medication that should be carried at all times in the event that it ever happens again.

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