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DRUG INTERACTIONS: Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop or change the dosage of any medicine before checking with them first.Avoid taking MAO inhibitors (e.g., furazolidone, isocarboxazid, linezolid, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine) within 2 weeks before, during, and after treatment with this medication. In some cases a serious (possibly fatal) drug interaction may occur.If you are currently using any of these medications listed above, tell your doctor or pharmacist before starting this medication.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially: alpha blockers (e.g., prazosin), certain antidepressants (e.g., tricyclics such as nortriptyline/imipramine, SSRIs such as fluoxetine/paroxetine, duloxetine, venlafaxine), medication for high blood pressure (e.g., beta blockers such as atenolol/metoprolol, clonidine, guanabenz, methyldopa), antipsychotics (e.g., chlorpromazine, haloperidol), lithium, certain pain medications (e.g., meperidine, propoxyphene), sedatives (e.g., lorazepam, certain antihistamines such as diphenhydramine), certain anti-seizure drugs (e.g., ethosuximide, phenytoin, phenobarbital), medications that can raise blood pressure (e.g., norepinephrine, phenylephrine, pseudoephedrine), other stimulants (e.g., methylphenidate), certain street drugs (e.g., LSD, MDMA/ "ecstasy"), veratrum alkaloids (e.g., cevadine, veratridine).Certain foods and drugs can affect the amount of acid in your stomach/intestines or urine. This can affect how well your body absorbs and uses this medication. Tell your doctor if you take any of these products: ammonium chloride, antacids, anti-ulcer medicine (e.g., H2 blockers such as famotidine/ranitidine, proton pump inhibitors such as omeprazole/lansoprazole), ascorbic acid (vitamin C), carbonic anhydrase inhibitors (e.g., acetazolamide), fruit juices, glutamic acid, guanethidine, methenamine, reserpine, sodium acid phosphate, sodium bicarbonate, certain "water pills" (diuretics, including some thiazides).Consult your doctor or pharmacist for more details.Check the labels on all your medicines (e.g., cough-and-cold products, diet aids) because they may contain ingredients that could increase your heart rate or blood pressure. Ask your pharmacist about the safe use of those products.Avoid drinking large amounts of beverages containing caffeine (e.g., coffee, tea, colas) or eating large amounts of chocolate. Caffeine can increase the side effects of this medication.This medication may affect the results of certain lab tests (blood and urine steroid levels). Tell laboratory personnel and all your doctors that you are taking this medication.Also report the use of drugs which might increase seizure risk when combined with this medication such as isoniazid (INH), phenothiazines (e.g., thioridazine), theophylline, or tricyclic antidepressants (e.g., amitriptyline), among others. Consult your doctor or pharmacist for details.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.