Iterax is a first-generation antihistamine that is used to treat allergies and anxiety. Due to its sedative effects, it is sometimes used to pre-medicate patients prior to surgery. Its main ingredient is hydroxyzine diHCl.
Manufactured by GlaxoSmithKline, Iterax is a formulation that is primarily available in foreign countries, such as the Philippines. Its American formulation is known as Aterax or Vistaril.
Side effects of Iterax include headache, dry mouth and sleepiness. Because of its sedative effects, people who take Iterax are advised to avoid consumption of alcohol and to avoid driving or operating heavy machinery. It is not recommended for women in the early stages of pregnancy.