Hydroxyzine
Hydroxyzine side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using hydroxyzine and call your doctor at once if you have a serious side effect such as:
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restless muscle movements in your eyes, tongue, jaw, or neck;
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tremor (uncontrolled shaking);
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confusion; or
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seizure (convulsions).
Less serious hydroxyzine side effects may include:
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dizziness, drowsiness;
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blurred vision, dry mouth; or
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headache.