My dr prescribed norco 10/325 for knee pain and atarax (hydroxyzine) 25 mg for anxiety. can i take norco and atarax (hydroxyzine) 25 mg together or space it out.

Good question: Better to hold the atarax (hydroxyzine) till done with the norco, taking both together might cause you CNS depression (e.g. drowsiness), spacing them out , morning and evening may reduce the combined side effects, but the problem is that atarax (hydroxyzine) stays in the system much more than the norco (~ 40 hours for atarax (hydroxyzine) vs ~ 10 for norco) , good that you asked, always exercise caution with multiple medications :)