Calcium Channel Blockers for AFib: What to Know
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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