Low Pulse Rate Resulting From Diltiazem Sr Caps

I had a high blood pressure reading for about a week between 159/69 & 200/69. My doctor changed my meds from Exforge 10/320 once a day to HCTZ 25 mg 3x a week to Diltiazem 240 mg SR caps every 12 hours & Edarbi 80 mg once a day. Gradually I saw a reduction in my blood pressure i.e. between 120/59 & 130/59. However my pulse rate has dropped to fom 70's to between 50 & 55. Today my pulse dropped to 47. This is dangerously low. I left a message at my doctors office, but he has not contacted me back. I am very concerned about this extremely low pulse. Please let me know what I can do to lessen this side effect that I believe may be coming from the Diltiazem.

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Hello, Doris! How are you?

When was your pulse that low, was it in a resting state, or during activity?

Did you have any other symptoms, such as nausea, dizziness or fainting?

What are you current blood pressure readings?

The FDA lists the typical side effects of this medication as possibly including nausea, dizziness, headache and stomach pain.

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