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What happens if I miss a dose (Norpace, Norpace CR)?

Try not to miss any doses of this medication. Missing doses could be very dangerous.

If you do miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take only your next regularly scheduled dose. Do not take a double dose of this medication. A double dose could be dangerous.

What happens if I overdose (Norpace, Norpace CR)?

Seek emergency medical attention.

Symptoms of a disopyramide overdose include dry mouth and eyes, blurred vision, constipation, difficulty urinating, dizziness, worsening irregular heartbeats, loss of consciousness, and death.

What should I avoid while taking disopyramide (Norpace, Norpace CR)?

Use caution when driving, operating machinery, or performing other hazardous activities. Disopyramide may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness, or blurred vision, avoid these activities.

Use alcohol cautiously. Alcohol may increase side effects while you are taking disopyramide.

Follow any other special instructions given by your doctor regarding food, beverages, and activities.

What other drugs will affect disopyramide (Norpace, Norpace CR)?

Before taking disopyramide, tell your doctor if you are taking any of the following medications:

• other medicines used to treat irregular heartbeats such as quinidine (Cardioquin, Quinora, others), amiodarone (Cordarone), bepridil (Vascor), procainamide (Pronestyl, Procan, Procanbid), and others;
• a beta-blocker such as acebutolol (Sectral), propranolol (Inderal), metoprolol (Lopressor), carteolol (Cartrol), labetalol (Normodyne, Trandate), pindolol (Visken), nadolol (Corgard), and others;
• erythromycin (E-Mycin, E.E.S., Ery-Tab, and others) or clarithromycin (Biaxin);
• phenytoin (Dilantin);
• phenobarbital (Solfoton, Luminal);
• cisapride (Propulsid);
• rifampin (Rimactane, Rifadin); or
• warfarin (Coumadin).

You may require a dosage adjustment or special monitoring during your treatment if you are taking any of the medicines listed above.

Drugs other than those listed here may also interact with disopyramide. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.

Where can I get more information?

Your pharmacist can provide more information about disopyramide.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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