Norpace (Disopyramide Phosphate)

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. Take your doses at regular intervals. Do not take your medicine more often than directed. Do not stop taking this medicine suddenly. This may cause serious, heart-related side effects. Your doctor will tell you how much medicine to take. If your doctor wants you to stop the medicine, the dose will be slowly lowered over time to avoid any side effects. Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for selected conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once. NOTE: This medicine is only for you. Do not share this medicine with others.

Side effects that you should report to your doctor or health care professional as soon as possible: -allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue -breathing problems -chest pain -confusion -cool, pale skin -fast, irregular heartbeat -feeling faint or lightheaded -fever, chills, or sore throat -headache -swelling of feet or legs -trouble passing urine or change in the amount of urine -unusually weak or tired -unusual weight gain -unusual hunger -yellowing of the eyes or skin Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome): -change in sex drive or performance -constipation or diarrhea -nausea, vomiting -stomach pain or bloating

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Do not take this medicine with any of the following medications: -amoxapine -antivirals for HIV or AIDS -apomorphine -arsenic trioxide -certain antibiotics like clarithromycin, erythromycin, pentamidine -certain medicines for depression like maprotiline, tricyclic antidepressants -certain medicines for fungal infections like fluconazole, itraconazole, ketoconazole, posaconazole, voriconazole -certain medicines for malaria like chloroquine, halofantrine -cisapride -droperidol -haloperidol -hawthorn -methadone -other medicines for irregular heart beat like dofetilide, dronedarone -phenothiazines like chlorpromazine, mesoridazine, thioridazine -pimozide -ranolazine -sertindole -tacrolimus -vardenafil -verapamil -ziprasidone This medicine may also interact with the following medications: -certain medicines for blood pressure or heart disease like beta-blockers -certain medicines for seizures like carbamazepine, phenytoin, phenobarbital -other medicines that prolong the QT interval (cause an abnormal heart rhythm)

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

Visit your doctor or health care professional for regular checks on your progress. Check your heart rate and blood pressure regularly while you are taking this medicine. Ask your doctor or health care professional what your heart rate and blood pressure should be, and when you should contact him or her. Your doctor or health care professional also may schedule regular tests to check your progress. You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks. Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe. This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe. Avoid extreme heat. This medicine can cause you to sweat less than normal. Your body temperature could increase to dangerous levels, which may lead to heat stroke. This medicine may affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.