Taking hydroxyzine has advantages over other sedative treatments, such as alprazolam, for some patients. Unlike alprazolam, hydroxyzine is not habit-forming, and very few patients build up a tolerance to it. Detailed Hydroxyzine dosage information for adults and children. Includes dosages for Anxiety, Nausea/Vomiting, Sedation and more; plus renal, liver and dialysis adjustments. Answers from trusted physicians on hydroxyzine ocd. First: Atarax (hydroxyzine, also sold as vistiril) is a sedating antihistamine. In addition to relieving anxiety. Hydroxyzine (Vistaril) is an antihistamine drug used to treat allergic reactions, anxiety, tension, nausea, vomiting, and alcohol withdrawal. Common side effects are tiredness, dizziness, sleepiness, and sedation. Drug interactions, dosage, and pregnancy and breastfeeding safety information are provided. Vistaril (hydroxyzine pamoate) is used for short-term treatment of the symptoms of anxiety and tension, as well to treat allergic reactions. Vistaril decreases activity in your brain, which is helpful in treating social anxiety disorder. Atarax and Itching OCD and Anxiety Atarax and Hydroxyzine OCD and Depression Atarax and Benadryl OCD and Obsessed Atarax and Anxiety OCD and Worried Atarax and Pain OCD and Compulsion Treato does not review third-party posts for accuracy of any kind, including for medical diagnosis or treatments, or events in general. Hydroxyzine reduces activity in the central nervous system. It also acts as an antihistamine that reduces the effects of natural chemical histamine in the body. Hydroxyzine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of itching, or hives on the skin. I was prescribed Hydroxyzine HCl for anxiety, nausea, and sleep. I have to take half of a small pill to get great sedative effects, but it takes up to 1.5 hours to kick in. Very effective to relax you and put you into a nice sleep. 1. I have generalized anxiety with ocd. The two are cyclic and build upon each other. 2. I think I've always had anxiety and have talked to counselors and such right from the point of elementary school.