Magnesium Supplements and Atrial Fibrillation (Afib)

Afib Medications

Magnesium is a crucial nutrient that we usually get through a balanced diet of eggs, leafy greens, and shellfish. Magnesium is critical in many bodily functions and has a relaxing effect on the muscles. With such benefits, magnesium has been posited as a possible way to prevent or minimize the occurrence of Atrial Fibrillation or AFib episodes.

Should I take Magnesium?

Let’s start with who should and shouldn’t take magnesium. Ultimately, this revolves around deficiency. If you are told that you have a magnesium deficiency based on your blood work, you should start supplementation as your doctor prescribes. As we’ve said above, magnesium is crucial in many bodily functions and should be within normal limits.

On the other hand, if you do not have a magnesium deficiency, you should speak to your primary care physician to discuss whether a magnesium supplement is appropriate for you before trying it. While many patients take magnesium without a deficiency, it’s always best to understand what you’re taking and why.

Should you take magnesium to stop or prevent an AFib episode?

The short answer is no; it is unlikely that a single dose of oral magnesium will do anything for an active Afib episode. You will need to speak to your electrophysiologist to understand your options. Of course, if you believe you’re having an emergency, don’t delay dialing 911 or going to the emergency room. That said, foods containing a good amount of magnesium can be part of a healthy diet. Consuming these foods along with moderating the intake of sugar, fat, and highly processed carbs can improve overall health and mitigate some of the worst effects of AFib, if not prevent it in the first place.

If, after speaking to your primary care physician or dietitian, you believe that magnesium is safe to take and wish to do so, there is probably no harm. Perhaps a short trial to see if it works for you could be done, as long as your physician is in agreement with it.

We look forward to assisting you with any irregular heartbeat issues you may have. Call us to schedule a consultation with Dr. Osorio, get a diagnosis, and develop an appropriate treatment plan.

Dr Jose Osorio
Miami, FL