Medicine for heart rhythm problems (including amiodarone, dofetilide, dronedarone, propafenone, quinidine, sotalol, verapamil)
Thyroid supplement
Warnings While Using This Medicine:
Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, blood vessel disease, thyroid problems, or any other heart problems, including heart block, a recent heart attack, or Wolff-Parkinson-White syndrome.
This medicine may cause the following problems:
Risk of overdose
Slow heartbeat, heart block
Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.
Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Possible Side Effects While Using This Medicine:
Call your doctor right away if you notice any of these side effects:
Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
Confusion, weakness, headache, dizziness
Fast, slow, pounding, or uneven heartbeat
Nausea, vomiting, loss of appetite, ongoing diarrhea, vision changes (green-yellow color disturbances, blurred vision)
Weight loss, stomach pain, unusual behavior, drowsiness (in children)
If you notice these less serious side effects, talk with your doctor:
Pain, itching, burning, swelling, or a lump under your skin where the needle or shot was given
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
Last Updated: 6/6/2024
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