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Norpace (Generic)
What are Generics?
Generic drugs marketed without brand names contain the exact same active ingredients used in their brand-name counterparts, but cost significantly less. The drugs are required to meet U.S. Food and Drug Administration (FDA) standards for safety, purity and effectiveness.

Norpace Norpace

Generic Norpace (Disopyramide) affects the way that your heart beats. It is a unique medication that can treat life-threatening types of abnormal heart rhythms. Generic Norpace offers highly effective treatment of irregular heart beats and is one of the top prescribed medications by doctors worldwide!

Generic Norpace is also marketed as Disopyramide Phosphate, and Rythmodan.

*Norpace® is manufactured by Searle.

Norpace 100mg Pills (Generic)

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Norpace 150mg Pills (Generic)

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Generic Norpace is an antiarrhythmic medication used in the treatment of Ventricular Tachycardia. It is used to treat potentially life-threatening types of abnormal heart rhythms. It works by making the heart beat more regularly. It is a sodium channel blocker and therefor classified as a Class 1a anti-arrhythmic agent.

How to take

Take Generic Norpace exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass of water.

Do not crush, chew, or break any controlled-release (CR) forms of Generic Norpace. Swallow them whole. They are specially formulated to release slowly in your body.

Do not skip doses or change your dosing schedule without talking to your doctor. Changing your schedule could make your condition much worse.

Side effects

If you experience any of the following serious side effects, stop taking Generic Norpace and seek emergency medical attention:

  • an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
  • a new or a worsening irregular heartbeat pattern;
  • chest pain, chest discomfort, shortness of breath, or swelling of your legs or feet; or
  • severe dizziness.

Other, less serious side effects may be more likely to occur. Talk to your doctor if you experience

  • mild dizziness or tiredness,
  • headache,
  • blurred vision,
  • dry mouth,
  • rash, itching,
  • muscle aches or pains, or
  • difficulty urinating.

This is not a complete list of side effects and others may occur.


Be sure to inform your doctor of all your medical conditions before you begin taking a medication. Some conditions can affect how you should take this medication.

This medication should only be used for life-threatening circumstances because of its potential for serious side effects.

Use caution when driving, operating machinery, or performing other hazardous activities. Generic Norpace 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 Generic Norpace.

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

Drug interactions

Before taking Generic Norpace, 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 Generic Norpace.

Missed dose

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.


Store Generic Norpace at room temperature away from moisture and heat.


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