People with atrial fibrillation need to avoid taking any supplements without consulting a doctor. Omega-3, St. John’s wort, and vitamin E may be particularly problematic.

These supplements could increase a person’s risk of atrial fibrillation or lessen the effects of medications that treat the condition.

This article examines the supplements and other substances that people with atrial fibrillation need to avoid. It also discusses which supplements might benefit someone with atrial fibrillation (AFib).

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People with AFib need to be wary that certain supplements might interact with medication.

Doctors often prescribe drugs to control a person’s heartbeat or prevent blood clots, and several common supplements may interact with these classes of medication.

Omega-3s

Omega-3s are fatty acids mainly present in seafood.

There are supplements that contain concentrated omega-3 fatty acids. Researchers have found that a prescription medication form of omega-3, icosapent ethyl, benefits certain types of heart disease and lowers the risk of cardiovascular events.

However, a growing body of research has found an association between omega-3 supplements and an increased risk of AFib.

In addition, high doses of omega-3s could also lead to bleeding problems if a person takes them alongside certain medication to prevent blood clots.

Vitamin E

Vitamin E is a nutrient that supports the immune system and blood vessels.

Taking vitamin E supplements could increase the risk of bleeding for people who take blood clot prevention medication, such as warfarin (Coumadin).

St. John’s wort

St. John’s wort is a herb that some people may use to help with depression, menopause symptoms, and certain skin conditions.

However, this supplement may reduce the effectiveness of common AFib medications such as warfarin and digoxin (Lanoxin).

Ginseng

Ginseng is an herbal supplement that some people suggest could improve energy and blood sugar management.

At present, there is uncertainty around whether it might interact with certain medications that people take for AFib. These include heart drugs known as calcium channel blockers and clot-preventing drugs.

Ginkgo biloba

Ginkgo biloba is an herbal supplement that some people take to help with thinking and to relieve anxiety.

This herbal supplement is another that may interact with blood-thinning medication to prevent clots, such as warfarin.

Hawthorn

Hawthorn is an herbal supplement that some use for conditions affecting the heart, kidneys, and digestive system.

Some sources suggest that hawthorn could interact with heart medications, including those for treating AFib.

In addition to the supplements above, there are other substances that people with AFib need to aim to avoid or limit. These can also affect how AFib medication works, and some may also make the condition worse.

These include alcohol, which can affect heart rate and how drugs work, and licorice, which could increase the risk of a harmful reaction to digoxin.

Smoking is also a habit to avoid. Research suggests that quitting smoking after receiving an AFib diagnosis has links to a reduced risk of stroke and cardiovascular disease.

Learn more about foods to eat and avoid with AFib.

Some forms of medications have an association with AFib or could affect its progression.

Antidepressants and AFib

Research suggests there is a relationship between depression and AFib, where one condition might feed into the other.

Some preliminary research found a potential association between antidepressant use and the likelihood of developing AFib. However, more research is necessary to make any conclusions.

Pain relievers and AFib

Pain-relieving drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs) can thin the blood.

When someone takes NSAIDs alongside blood-thinning drugs for AFib, there is a risk that their blood could become too thin, leading to an increased risk of bleeding.

Some nutrient deficiencies, such as magnesium, selenium, and vitamin D, may have links to an increased risk of AFib. However, researchers have not demonstrated that supplementing with these leads to a lower risk of AFib.

It is preferable to get nutrients from dietary sources. However, if people are unable to get enough vitamins and minerals in their diet, supplements may help ensure they are getting enough.

Learn more about supplements for arrhythmia.

People with AFib need to speak with a doctor as soon as they can if they experience any of the following symptoms:

These symptoms could suggest a stroke, blood problems, or a heart attack.

Learn more about the signs of a stroke.

Can vitamin D supplements cause atrial fibrillation?

It appears unlikely. In fact, a study from Finland suggests that vitamin D supplements could actually help reduce the risk of AFib in older adults.

Other research has also reported an association between vitamin D deficiency and AFib.

Should I take magnesium if I have AFib?

Magnesium deficiency may have links to an increased AFib risk, but studies have not shown the benefits of taking magnesium supplements.

Some research suggests that taking intravenous magnesium, which healthcare professionals administer via the veins, alongside standard AFib treatments could help manage people’s heart rates.

However, the study did not look at magnesium supplements that people can take at home.

Therefore, it is essential to consult a doctor before taking any supplements with AFib.

What is the best vitamin for an irregular heartbeat?

Some studies suggest there may be a link between certain vitamin and mineral deficiencies (magnesium, selenium, and vitamin C) and the risk of AFib.

However, studies have not proven supplementing helps with AFib. More studies are necessary before making recommendations.

When possible, it is preferable to get nutrients through the diet, but a doctor can help determine if a person needs additional supplementation.

People with AFib need to be wary about using a number of supplements, including omega-3s, vitamin E, and St. John’s wort.

These supplements and others could hinder the effectiveness of AFib medications, while some could put people more at risk of AFib progressing.

If someone with AFib is considering taking a supplement, they need to discuss it with their doctor first to ensure it won’t affect their treatment plan.

It is preferable to get nutrients through diet whenever possible, but a healthcare professional can help determine whether supplementing vitamins or minerals may be beneficial.