Agree with everything already posted and plan to try ayurveda myself based on what I just read.
I'd like to add that just about any drug you take may deplete magnesium and even without drugs, our diets are typically low. LOw mag can cause any of the symptoms for which one may take cardiac drugs, and these drugs all further deplete mag.
A good way to supplement is Magnesium citrate sold in any drugstore in laxative section in glass bottles. Laxative dose is whole bottle, but for a daily nutritional supplement, a couple of tablespoons.