Your medications: The Modafinil is a stimulant which can cause abnormal hearth rhythms. Your levothroid, if not properly dosed could do it as well, ask your doctor for a blood test to make sure that dose is not too high for you. Being 58 years old, you could have heart problems unrelated to the medications. You should see a doctor to get this evaluated.
Answered 5/5/2016
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