Also selenium and zinc deficiencies can cause heart palpatations. So if you can't take iodine because of the heart quivers you might have a deficiency you need to correct first.
Replied By Joan (Virginia, US) on 11/04/2014
I get heart palpitations when I drink coffee or tea. It's the caffeine for me. So I add a bit of organic BLACKSTRAP MOLASSES to my coffee. That prevents me from having heart palpitations. BSM contains several minerals, which coincides with your theory that heart palpitations are as a result of a mineral deficiency.