
is an antiarrhythmic agent. Disopyramide can help the heart to return to and maintain a normal heart rhythm. Disopyramide helps to slow rapid heartbeats (tachycardia). Generic disopyramide capsules are available.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:
• abnormal levels of potassium in the blood
• bladder obstruction
• diabetes
• glaucoma
• heart disease or problems other than rhythm and heart rate problems
• kidney disease
• liver disease
• myasthenia gravis
• prostate trouble
• an unusual or allergic reaction to disopyramide, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding
How should I take this medicine?
Take disopyramide capsules or extended-release capsules by mouth. Follow the directions on the prescription label. Swallow the capsules with a drink of water; do not suck or chew the extended-release capsules. Take your doses at regular intervals. Do not take your medicine more often than directed.
What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Leave an interval of at least 4 hours between doses of regular capsules and 6 to 8 hours between doses of extended-release capsules. Do not take double or extra doses.
What drug(s) may interact with disopyramide?
• arsenic trioxide
• astemizole
• bepridil
• beta-blockers, often used for high blood pressure or heart problems
• bosentan
• certain antibiotics (such as clarithromycin, erythromycin, gatifloxacin, grepafloxacin, levofloxacin, moxifloxacin, sparfloxacin)
• cisapride
• cyclobenzaprine
• ginger
• hawthorn
• lidocaine
• medicines for colds or breathing difficulties (including asthma)
• medicines for mental depression such as tricyclic antidepressants
• medicines for anxiety, mental problems or psychotic disturbances
• medicines for movement abnormalities as in Parkinson’s disease, or for gastrointestinal problems
• medicines for seizures such as phenytoin, phenobarbital, carbamazepine
• medicines to control heart rhythm (examples: amiodarone, digoxin, dofetilide, sotalol, procainamide, quinidine)
• mexiletine
• pimozide
• potassium salts
• probucol
• rifampin
• ritonavir
• sevelamer
• terfenadine
• warfarin
Tell your prescriber or health care professional about all other medicines you are taking, including non-prescription medicines, nutritional supplements, or herbal products. Also tell your prescriber or health care professional if you are a frequent user of drinks with caffeine or alcohol, if you smoke, or if you use illegal drugs. These may affect the way your medicine works. Check with your health care professional before stopping or starting any of your medicines.
What side effects may I notice from taking disopyramide?
Side effects that you should report to your prescriber or health care professional as soon as possible:
• change in the amount of urine passed, or difficulty passing urine
• chest pain, palpitations
• confusion
• cool, pale skin
• difficulty breathing
• fever, chills, or sore throat
• headache
• lightheadedness or fainting spells
• muscle weakness
• skin rash, itching
• swelling of feet or legs
• unusual weakness or tiredness
• unusual weight increase
• unusual hunger
• yellowing of the skin or eyes
Side effects that usually do not require medical attention (report to your prescriber or health care professional if they continue or are bothersome):
• dizziness, drowsiness
• blurred vision, dry eyes
• dry mouth and throat
• constipation, or less likely, diarrhea
• nausea, vomiting
• sexual difficulties
• stomach pain or bloating
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