This medication, Atarax (Hydroxyzine), is an antihistamine used to treat itching, anxiety, and tension. It can also be used to control nausea and vomiting, and to treat allergic reactions. It works by blocking histamine, a substance in the body that causes allergic symptoms. It is available in tablet and liquid form, and can be taken with or without food. It is an effective and safe medication for treating a variety of conditions.