Before taking disopyramide,
tell your doctor and pharmacist if you are allergic to disopyramide or any other drugs.
tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially clarithromycin (Biaxin), erythromycin (E.E.S., E-mycin, others), itraconazole (Sporanox), ketoconazole (Nizoral), other medications for arrhythmias such as quinidine (Quinidex) or procainamide (Pronestil, Rhythmin), phenytoin (Dilantin), potassium supplements (K-Dur, Klor-Con), propranolol (Inderal), verapamil (Calan, Covera, Verelan), and vitamins.
tell your doctor if you have or have ever had congestive heart disease, high blood pressure, diabetes, kidney or liver disease, glaucoma, myasthenia gravis, urinary retention, or benign prostatic hypertrophy.
tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking disopyramide, call your doctor.
talk to your doctor about the risks and benefits of taking disopyramide if you are 65 years of age or older. Older adults should not usually take disopyramide because it is not as safe or effective as other medications that can be used to treat the same condition.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking disopyramide.
you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.
remember that alcohol can add to the drowsiness caused by this medication.
talk to your doctor about the use of cigarettes and caffeine-containing beverages. These products may increase the irritability of your heart and interfere with the action of disopyramide.