is hydroxyzine a benzodiazepine
Best Answer: Atarax will not cause a false positive on a urine test. Atarax (hydroxyzine HCl) is unrelated chemically to the phenothiazines, reserpine, meprobamate, or the benzodiazepines. It is classed as a piperazine antihistamine. Still, you need to inform the tester about all medications you are taking.