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 dronedarone
-phenothiazines like chlorpromazine, mesoridazine, thioridazine
-pimozide
-ranolazine
-sertindole
-tacrolimus
-vardenafil
-verapamil

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) like dofetilide, ziprasidone

They need to know if you have any of these conditions:
-diabetes
-difficulty passing urine
-glaucoma
-heart disease or previous heart attack
-kidney disease
-liver disease
-low blood pressure
-malnutrition
-myasthenia gravis
-an unusual or allergic reaction to disopyramide, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

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.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.