Atarax tablets, containing hydroxyzine hydrochloride, are used as an antihistamine to treat anxiety, tension, and allergic skin reactions. The medication, available in 10 mg and 25 mg doses, is contraindicated for certain patients and may cause side effects, including drowsiness and QT prolongation. Caution is advised for those with specific health conditions, and its use during early pregnancy is not recommended due to potential fetal risks.