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Hydroxyzine Side Effects

Medically reviewed by Drugs.com. Last updated on Sep 4, 2023.

Applies to hydroxyzine: oral capsule, oral syrup, oral tablet.

Other dosage forms:

Common side effects of hydroxyzine

Some side effects of hydroxyzine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Rare

  • shakiness in the legs, arms, hands, or feet
  • trembling or shaking of the hands or feet

Incidence not known

Serious side effects of hydroxyzine

Along with its needed effects, hydroxyzine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking hydroxyzine:

Incidence not known

  • chest pain, discomfort, or tightness
  • cough
  • difficulty with swallowing
  • dizziness
  • fainting
  • fast heartbeat
  • hives, itching, or skin rash
  • irregular or slow heart rate
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • trouble breathing
  • unusual tiredness or weakness

Get emergency help immediately if any of the following symptoms of overdose occur while taking hydroxyzine:

Symptoms of overdose

For healthcare professionals

Applies to hydroxyzine: compounding powder, intramuscular solution, oral capsule, oral suspension, oral syrup, oral tablet.

General

The most commonly reported side effects included sleepiness, headache, and tiredness.[Ref]

Nervous system

Other

Gastrointestinal

Cardiovascular

Hypersensitivity

Respiratory

Dermatologic

Psychiatric

Genitourinary

Ocular

Hepatic

Hematologic

Metabolic

References

1. (2001) "Product Information. Vistaril (hydroxyzine)." Pfizer U.S. Pharmaceuticals

2. (2001) "Product Information. Atarax (hydroxyzine)." Pfizer U.S. Pharmaceuticals

3. Cerner Multum, Inc. "UK Summary of Product Characteristics."

Frequently asked questions

Further information

Hydroxyzine side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.