• This medicine must be started in a setting with continuous heart monitoring. Patients should be readmitted for continuous monitoring if dosage is increased.
• This medicine does not mix well with many medicines. Serious reactions may occur. Check all medicines with healthcare provider.
• If you have an allergy to dofetilide or any other part of this medicine.
• Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.
• If you have any of the following conditions: Low magnesium levels, low potassium levels, severe kidney disease, or slow heartbeat.
• If you are breast-feeding.
• Dofetilide tries to normalize the fast heartbeats by slowing the current through the heart.
• Use prescription as directed, even if feeling better.
• Take this medicine at a similar time of day.
• Take this medicine with or without food. Take with food if it causes an upset stomach.
• Never try to make up a missed dose, skip the missed dose and return to your regular schedule.
• Do not take a double dose or extra doses.
• Do not change dose or stop medicine. Talk with healthcare provider.
• Change in condition being treated. Is it better, worse, or about the same?
• Follow up with healthcare provider.
• Store at room temperature.
• Protect from light.
• Protect from moisture. Do not store in a bathroom or kitchen.
Created: 2005-04-07 16:35:36.0
Modified: 2010-03-09 08:30:22.0
Lexi-PALS TM © (1977)-(2007) Lexi-Comp, Inc. All rights reserved.
• If you have a life-threatening allergy, wear allergy identification at all times.
• Do not share your medicine with others and do not take anyone else's medicine.
• Keep all medicine out of the reach of children and pets.
• Most medicines can be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.
• Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).
• Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or in Canada to Health Canada's Canada Vigilance Program at 1-866-234-2345.
• Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.
• Do not run out of this medicine.
• Wear disease medical alert identification.
• If you have kidney disease, talk with healthcare provider.
• Check medicines with healthcare provider. This medicine may not mix well with other medicines.
• Tell healthcare provider if you are pregnant or plan on getting pregnant.
• Feeling lightheaded, sleepy, having blurred vision, or a change in thinking clearly. Avoid driving, doing other tasks or activities that require you to be alert or have clear vision until you see how this medicine affects you.
• Headache.
• If you suspect an overdose, call your local poison control center or emergency department immediately.
• Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.
• Fast heartbeat.
• Chest pain or pressure.
• Severe dizziness or passing out.
• Severe headache.
• Severe nausea or vomiting.
• Any rash.
• No improvement in condition or feeling worse.
