What are the possible side effects of dofetilide (Tikosyn)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- headache with chest pain and severe dizziness;
- fast or pounding heartbeats, feeling like you might pass out;
- low magnesium (confusion, uneven heart rate, jerking muscle movements, muscle weakness or limp feeling); or
- low potassium (confusion, uneven heart rate, extreme thirst, increased urination, leg discomfort, muscle...
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What are the precautions when taking dofetilide (Tikosyn)?
Before taking dofetilide, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney problems, liver disease.
This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Dofetilide may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms...
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