Mg and Fe are important factors in health. If you don't get enough magnesium, and if you're borderline or actually anemic (low on folic acid, low ferratin levels, or iron deficient), it can lead to all sorts of issues. You may need a full blood assay to find out if you're systems are working properly AND IF you're getting the right nutrients. Liver enzymes and creatinine levels will be revealing...again...blood.

Have you not been prescribed apixaban or equivalent to anti-coagulate? I know, the cost is choking for many, but it's great insurance, well tolerated, and works like a hot damn. It doesn't 'thin' the blood, only slows coagulation. This is key for any arrhythmias....exceedingly important to help prevent strokes. Stroke is the leading lethal problem in arrhythmias.