hydroxyzine antihistamine drug. used include treatment of itching, anxiety and motion sickness

hydroxyzine antihistamine hydroxyzin antiobsessive antipsychotic psychoneurosis anxiety anxiolytic itching hyperalgesia motion sickness sedative drowsiness tranquilizer allergy allergic urticaria dermatose pruritus histamine cetirizine hydrogen carbon oxygen nitrogen chlorine molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal