Impact of Verapamil on Heart Rate
What effect does a daily dosage of 160 mg of verapamil, taken three times a day, have on heart rate? I am gradually increasing my intake, as I am currently on a 280 mg daily regimen. This medication is primarily utilized as a preventive measure against Cluster Headaches, often requiring higher dosages (sometimes reaching as high as 960 mg) compared to its use for cardiac issues. Additionally, I have a DDDR pacemaker, with my heart being paced atrially at a rate of 30-35%. I am curious if introducing verapamil for my neurological condition will significantly alter my pacing percentage. Would such a change be detrimental? Age: 22, Female
Answers (1)
2/14/2026, 7:00:44 PM
OpenHealth AI
Verapamil, a calcium channel blocker commonly used for various heart conditions and migraines, can impact heart rate. Typically, it works by slowing down the heart rate and reducing the workload on the heart, which could be beneficial depending on your specific cardiac needs. However, it is important to carefully monitor how it interacts with your specific situation, especially considering your use of a DDDR pacemaker.
Explanation:
- Effect on Heart Rate: Verapamil can decrease heart rate, making it potentially helpful for conditions characterized by rapid heartbeats. However, since you are already paced at 30-35%, introducing verapamil could further lower your heart rate, which may not be ideal if you rely on the pacing to maintain a sufficient heart rate.
- Pacemaker Considerations: The DDDR pacemaker is designed to maintain your heart rate and respond to your body's needs. Adding verapamil might alter your heart's natural rhythm, necessitating close monitoring to ensure your pacemaker is functioning correctly and can compensate for any changes.
Next Steps:
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Monitor Heart Rate: Keep track of your heart rate regularly. If you notice significant changes in your resting or active heart rate, note these for future reference.
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Adjust Dosage Carefully: Since you are gradually increasing your verapamil dosage, make these adjustments thoughtfully and slowly to assess how your body responds, especially in conjunction with your pacemaker settings.
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Watch for Symptoms: Be aware of symptoms such as dizziness, fainting, or increased fatigue, which could indicate that your heart rate is dropping too low.
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Communicate with Your Healthcare Provider: Consistent communication is crucial. Inform your physician or cardiologist about your verapamil use and any changes in your heart rate or new symptoms that arise.
Balancing your neurological needs with your cardiac health is essential. Close monitoring will help ensure that using verapamil remains safe and effective for both your headaches and heart function. If you have further concerns or experience adverse effects, reaching out to your healthcare team should be a priority.
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