I have low potassium levels. I can't find a supplement that states it is gentle on the stomach. I am taking potassium and sodium bicarbonate as a PH balancer and lactic acid remover. However, by my blood tests, it is looking like i need a lot more. Does anybody know a good bio available form of potassium supplement (without a prescription) with lower risk of stomach upset? How about albion chelated potassium? Has anyone ever tried this and has it caused anyone problems?