<p>Taking certain MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking isocarboxazid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, or tranylcypromine during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Caution should be excercised while taking this drug with antihistamines applied to the skin (such as diphenhydramine cream, ointment, spray), antispasmodics (e.g. atropine, belladonna alkaloids), beta blockers (e.g. metoprolol, atenolol), drugs for Parkinson&rsquo;s disease (e.g. anticholinergics such as benztropine, trihexyphenidyl), guanethidine, certain inhaled anesthetics (e.g. halothane), methyldopa, reserpine, scopolamine, tricyclic antidepressants (e.g. amitriptyline, desipramine), anti seizure drugs (e.g. carbamazepine), medicine for sleep or anxiety (e.g. alprazolam, diazepam, zolpidem), muscle relaxants, narcotic pain relievers (e.g. codeine), psychiatric medicines (e.g. chlorpromazine, risperidone, amitriptyline, trazodone).</p>