Calcium Channel Blockers for AFib: What to Know

What are calcium channel blockers?

Calcium channel blockers (CCBs) are a class of medications that block the entry of calcium ions into cells. This can have a number of effects, including relaxing blood vessels and slowing down the heart rate.

How are CCBs used to treat AFib?

CCBs are one of the first-line treatments for AFib. They are effective in controlling the heart rate and preventing blood clots. CCBs are also well-tolerated, with few side effects.

What are the different types of CCBs?

There are several different types of CCBs, including:

* Non-dihydropyridine CCBs: These include verapamil and diltiazem. Non-dihydropyridine CCBs are more potent than dihydropyridine CCBs and can cause more side effects.

* Dihydropyridine CCBs: These include nifedipine and amlodipine. Dihydropyridine CCBs are less potent than non-dihydropyridine CCBs, but they cause fewer side effects.

What are the side effects of CCBs?

The most common side effects of CCBs include:

* Constipation

* Diarrhea

* Nausea

* Vomiting

* Headache

* Fatigue

* Dizziness

* Lightheadedness

Who should not take CCBs?

CCBs should not be taken by people with:

* Sick sinus syndrome

* Second- or third-degree heart block

* Severe hypotension

Can CCBs be used with other medications?

CCBs can interact with a number of other medications, including:

* Digoxin

* Warfarin

* Beta-blockers

* ACE inhibitors

* ARBs

Talk to your doctor about any medications you are taking before starting CCBs.

Precautions

* Pregnancy: CCBs should be used with caution during pregnancy.

* Breastfeeding: CCBs should not be used while breastfeeding.

* Alcohol: Alcohol can increase the side effects of CCBs.

Talk to your doctor if you have any questions about calcium channel blockers and AFib.

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