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Vistaril Side Effects

Although most people do not experience side effects while taking Vistaril, problems may occur. Based on limited information, common side effects may include drowsiness, headaches, and decreased mental alertness. While most side effects are minor, some are potentially serious and should be reported to your healthcare provider immediately, including seizures, hallucinations, and allergic reactions.

An Introduction to Vistaril Side Effects

As with any medicine, Vistaril® (hydroxyzine) can cause side effects. However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are easily treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with Vistaril. Your healthcare provider can discuss a more complete list of Vistaril side effects with you.)

Bothersome Side Effects of Vistaril

Vistaril is a relatively "old" medication, approved before the United States Foods and Drug Administration (FDA) required very detailed information on side effects in the prescribing information for medications. Only vague information on side effects was provided (with no specific percentages).
Based on the limited information in the prescribing information for Vistaril, possible bothersome (but not usually dangerous) side effects of Vistaril include:

Side Effects to Report

There are a number of possible side effects with Vistaril that you should report to your healthcare provider. These include, but are not limited to:
  • Seizures
  • Hallucinations
  • Signs of an allergic reaction, such as:


    • An unexplained rash
    • Hives
    • Itching
    • Unexplained swelling (especially of the lips, mouth, or throat)
    • Wheezing or other breathing problems. 


Warning: 10 Hidden Sources of Lactose

Vistaril Medication Information

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