Stopping Diltiazem Er Capsules

I had my thyroid and one parathyroid removed in December 2014 due to a multinodular goiter. It was diagnosed by a cardiologist as I had hyperthyroidism with a constant resting heart rate of over 90 bpm, and I have remained on it after surgery, being put on 75mg of levothyroxine. The side effects have been getting so bad that I went off Diltiazem a few days ago, and after the second day, my energy level and overall well-being started to come back. So, I know I need the dosage adjusted downward. However, I can't adjust it until I see the doctor. Is it safe to stop taking Diltiazem abruptly?

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Hello, Kate! How are you?

You shouldn't stop such a medication abruptly, as the FDA reports that it may cause a rebound effect, which could include elevated heart rate and blood pressure and that could result in heart attack, stroke or heart failure.

What side effects were you experiencing? The typical ones are listed as including nausea, dizziness, headache, increased urination and hypotension.

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Is it safe to just stop taking extended-release Diltiazem capsules? I've been on them for 3 years, taking them at night for AFib rate control and hypertension. My EP told me to just stop taking them because the side effects were getting worse, but now I'm totally dizzy and tired 3 days after stopping. Will that go away? Was he right to tell me to just stop taking them?

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