@713j , My EP recommended I take 400 mg of magnesium once a day.

I had read some on MCC talking about potassium helping so I asked about that. EP replied that according to my recent blood test my potassium was at the high end of normal so would not recommend taking a supplement.

I think important you talk to your EP or cardiologist before taking any supplements but don't hesitate to asked them if they can help. Anything that can help is my opinion is worth exploring.