Your 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 your doctor or pharmacist first.Avoid taking MAO inhibitors (e.g., furazolidone, isocarboxazid, linezolid, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine) within 2 weeks before, during, or after treatment with this medication. In some cases a serious, possibly fatal drug interaction may occur.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: adrenaline-like drugs (e.g., ephedrine, epinephrine), some beta blockers (such as propranolol), digoxin, tricyclic antidepressants (e.g., amitriptyline, nortriptyline), "water pills" (diuretics such as furosemide, hydrochlorothiazide).Check the labels on all your medicines (e.g., cough-and-cold products, diet aids) because they may contain ingredients that could increase heart rate or blood pressure. Ask your pharmacist about using those products safely.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.