when taking tegratol 200 mg. twice a day is okay to take xanax?

This is from the PDR:

The effectiveness of acetaminophen (Tylenol), alprazolam (Xanax), clonazepam (Klonopin), clozapine (Clozaril), dicumarol, doxycycline (Doryx), ethosuximide (Zarontin), haloperidol (Haldol), lamotrigine (Lamictal), methsuximide (Celontin), oral contraceptives, phensuximide (Milontin), phenytoin (Dilantin), theophylline (Theo-Dur), tiagabine (Gabitril), topiramate (Topamax), valproic acid (Depakene), and warfarin (Coumadin) may be reduced when these drugs are taken with Tegretol.

I have no clue if its ok, but obviously that means youll have to put more xanax in you to get the desired effect. That is never never a good thing with a benzodiazapene.