Indications 

Norpace is a prescription medicine indicated for the treatment of life-threatening irregular heartbeats, including sustained ventricular tachycardia. 

As an anti-arrhythmic drug, Norpace functions by inhibiting certain cardiac electrical signals responsible for an irregular heartbeat. This mechanism of action facilitates the restoration of normal heart rhythm and the maintenance of a consistent and steady heartbeat. 

Uses and Dosage 

Before taking Norpace and with each prescription refill, carefully review its medication guide and patient information leaflet. Ask your doctor or pharmacist if you have any questions or clarifications. 

Norpace dosage is individualized based on the patient’s age, medical condition, and response to the treatment. 

Typically, this medication is taken 4 times daily (every 6 hours) as prescribed by the doctor, without regard to food intake. 

For optimal results, take Norpace at a consistent time each day, exactly as directed. Refrain from altering the prescribed dosage, frequency, or duration of intake without consulting your doctor. 

Continue taking Norpace even if you are feeling better. Consult with your doctor before discontinuing the medication. 

Side Effects 

Listed below are the potential adverse effects of Norpace. If any of them persist or worsen, promptly notify your physician. 

Common Side Effects 

• Dry mouth, nose, or throat 
• Nausea, stomach pain, bloating 
• Constipation 
• Dry eyes, blurred vision 
• Headache, tiredness, general ill feeling 
• Muscle pain or weakness 

Serious Side Effects 

• New or worsening irregular heartbeat pattern 
• Reduced or painful urination 
• Feeling light-headed or at risk of fainting 
• Shortness of breath, swelling, rapid weight gain 
• Signs of low blood sugar: 
  • Headache 
  • Hunger 
  • Weakness 
  • Sweating 
  • Confusion 
  • Irritability 
  • Dizziness 
  • Rapid heart rate 
  • Restlessness 

Call your doctor right away if any of the severe side effects listed above occur. 

Allergic Reactions 

Although rare, a severe allergic reaction to Norpace may occur. Promptly seek medical assistance if you observe any of these symptoms: 

• Hives 
• Trouble breathing 
• Face, lips, tongue, or throat swelling 

Not all side effects of Norpace are included in this list. In case any unlisted effects are observed, inform your physician immediately.   

Cautions 

Before starting treatment with Norpace, inform your doctor and pharmacist of any known allergies, particularly to disopyramide, other drugs, or any of the components of Norpace capsule. 

To ensure Norpace is safe for you, disclose to your physician your medical background, especially if you have a history of: 

• Diabetes 
• Glaucoma 
• Kidney disease 
• Liver problems 
• Myasthenia gravis 
• Urinary problems (e.g., due to enlarged prostate or urinary retention) 

To minimize the potential interactions of Norpace with other medications like fingolimod, diltiazem, and verapamil (specific calcium channel blockers), notify your healthcare provider and pharmacist about all current and intended use of prescription and non-prescription drugs, vitamins, and herbal supplements.  

The efficacy of Norpace can be altered by other drugs that impact its elimination from the body, such as phenytoin and saquinavir. 

Exercise caution when taking Norpace, as it can potentially lead to blurred vision and impair cognitive function and reflexes. Engage in activities such as driving or tasks that demand attentiveness and clear vision with care. 

The use of Norpace may result in QT prolongation, a condition that impacts the heart rhythm. This condition can lead to infrequent but severe symptoms, including fast and irregular heartbeat, severe dizziness, and fainting, which require immediate medical attention. 

The use of Norpace during pregnancy should be considered only if the anticipated benefits outweigh the potential risks to the developing fetus. 

Disopyramide is excreted in breast milk; however, its impact on nursing infants is uncertain. Before breastfeeding, seek advice from your doctor.