You should not use Xanax if you have narrow-angle glaucoma, if you also take itraconazole or ketoconazole, or if you are allergic to Xanax or similar medicines, such as chlordiazepoxide (Librium), clonazepam (Klonopin), clorazepate (Tranxene), diazepam (Valium), lorazepam (Ativan), or oxazepam (Serax). Do not use Xanax if you are pregnant. http://kbforum.dragondoor.com/entry.php?b=78890