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  • Calcium channel blocker and antihypertensive
  • Treats high blood pressure, angina, and arrhythmia
  • Sold under brand name Calan SR, Verelan PM
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What is verapamil SR?

Verapamil SR is a sustained-release form of verapamil, a prescription medication used to treat conditions like high blood pressure, angina (chest pain), and certain heart rhythm disorders. The SR (sustained-release) version releases the medication gradually, so it typically only needs to be taken once or twice a day, depending on the prescription.

How does verapamil SR work?

Verapamil SR works by blocking calcium channels in the heart and blood vessel walls. Calcium is needed for muscle contraction, so when these channels are blocked:

  • Blood vessels relax, which helps lower blood pressure.
  • The heart rate slows down, which reduces the heart’s workload.
  • Blood flow to the heart improves, helping relieve chest pain (angina).
How do I know if I qualify for verapamil SR?

You may qualify for verapamil SR if you have conditions like high blood pressure, chronic chest pain (angina), or certain types of irregular heartbeats (such as atrial fibrillation or supraventricular tachycardia).

A healthcare provider will determine if it’s right for you based on your medical history, current medications, blood pressure readings, heart function, and any existing health conditions. If you're considering treatment, they may also order labs or an EKG to ensure it's a safe option.

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