Before using Xanax XR, tell your doctor if you regularly use other medicines that make you sleepy (such as cold or allergy medicine, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety). They can add to sleepiness caused by Xanax XR.
Before taking Xanax XR, tell your doctor if you are using any of the following drugs:
birth control pills;
cimetidine (Tagamet);
diltiazem (Tiazac, Cartia, Cardizem);
isoniazid (IsonaRif, Rifamate);
propoxyphene (Darvon, Darvocet);
seizure medication;
antifungal medication such as fluconazole (Diflucan), itraconazole (Sporanox) or ketoconazole (Nizoral); or
antidepressants such as fluvoxamine (Luvox), desipramine (Norpramin), or imipramine (Janimine, Tofranil).
This list is not complete and there may be other drugs that can interact with Xanax XR. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
 Xanax XR drug interactions (more detail)
