Can you use methamphetamine while being on Vistaril? I get hydroxyzine prescribed to me for anxiety. I havent took em for a long time but lately lifes been stressful. Will one impower the other? I never itch or get any bad side effects on meth like i use to such as looking out for invisible people. Will it causs any of those? Im not worried of it taking away the speedy effect as i have adhd when i rail meth im calm. Even if i smoke im still calm. Alert but calm as ever.