Overview
Hydroxyzine is approved by the U.S. Food and Drug Administration (FDA) for the management of pruritus (itching) caused by allergic conditions such as chronic urticaria (hives). It is available in both tablet and oral solution forms. 

Hydroxyzine belongs to a class of medications known as antihistamines. It works by blocking histamine, a substance in the body that causes allergy symptoms, thereby reducing itching and swelling associated with urticaria.

How do I take it?
Prescribing information states that hydroxyzine is taken by mouth as a tablet or oral solution. Dosing cadence depends on factors such as age. Hydroxyzine should be taken exactly as directed by a healthcare provider.

Side effects
Common side effects of hydroxyzine include dry mouth, drowsiness, and involuntary motor activity such as tremors (involuntary shaking) or convulsions (seizures), particularly at higher-than-recommended doses. Drowsiness often lessens with continued use or dose reduction.

Rare but serious side effects may include QT prolongation (a heart rhythm condition), Torsade de Pointes (a potentially life-threatening arrhythmia), hallucinations, headache, allergic reactions, and a severe skin condition known as acute generalized exanthematous pustulosis (AGEP), which involves fever and pustules (small blisters) on red, swollen skin.

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Label: Hydroxyzine Hydrochloride — Hydroxyzine Tablet, Film Coated — DailyMed

Label: Hydroxyzine Hydrochloride — Hydroxyzine Hydrochloride Oral Solution — DailyMed