Find out about Atarax benefits, side effects, price, dose, how to use Atarax , interactions and contraindications Atarax ( Hydroxyzine Hydrochloride) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Find patient medical information for Hydroxyzine ( Atarax , Vistaril , and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Atarax 10 MG Tablet is an anti-allergic medicine that can also treat anxiety and help with preoperative sedation. It contains hydroxyzine and may cause drowsiness, dry mouth, and other side effects. Learn more about its dosage, interactions, and precautions.