Defulide 40mg does not appear to match an approved medication name, but it is likely a misspelling or alternate reference for dofetilide, which is a medication used primarily for certain heart rhythm disorders such as atrial fibrillation and atrial flutter[2]. Below are the potential side effects associated with dofetilide 40mg, presented based on current clinical resources:
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Common side effects:
- Headache
- Mild dizziness or lightheadedness
- Cold symptoms (stuffy nose, sneezing, sore throat)
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Serious side effects (seek emergency help if these occur):
- Severe allergic reactions: hives, difficulty breathing, swelling of face, lips, tongue, or throat
- Chest pain
- Shortness of breath
- Racing, slow, irregular, or pounding heartbeat
- Dizziness, feeling faint or actually fainting
- New or worsening heart rhythm problems, including a potentially fatal rhythm called Torsade de Pointes
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Electrolyte imbalances:
- Unusual sweating
- Increased thirst
- Weakness or unusual tiredness
- Muscle cramps or twitching
- Nausea, vomiting, or loss of appetite
- Constipation or severe diarrhea
- Restlessness or irritability
- Confusion or decreased alertness
This is not an exhaustive list. Other side effects may occur. Always consult with your healthcare provider for medical advice about side effects, or report serious reactions immediately[1][2][4].
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