Okay to take hydroxyzine and theraflu

I take one hydroxyzine (i think 25 mg) at bedtime....is it okay to drink theraflu with it?

Hydroxyzine (Vistaril, Atarax) may make you drowsy and Theraflu may also make you drowsy.

Can you take them together, yes. Is there a chance of you becoming overly drowsy, yes. Just don't take the combination during the day.