Not medical advice: Vistaril, the brand name for the drug hydroxyzine, is not subject to the Controlled Substances Act. It's classified as an antihistamine and is prescribed to treat hives, contact dermatitis, and anxiety and tension, as well as control nausea and vomiting. Vistaril can cause heavy sedation but does not have the dependency issues present with other sedatives.
Less serious side effects: dizziness, drowsiness, blurred vision, dry mouth, headache.
Serious side effects: tremor (uncontrolled shaking), seizure (convulsions), confusion, restless muscle movements in your neck, jaw, tongue or eyes. If you experience any of these call your doctor right away.
In medical news, researchers at the University of Nebraska Medical Center recently revealed that vitamin D helps chronic hive sufferers by decreasing their number of hives and the number of days a week they have them. Learn more from Journal Star.