For those who supplement potassium, have you tried potassium bicarbonate? I'm taking 1/2 teaspoon in 12 ounces of water, and this is causing my stomach to feel raw/burn. I never have that reaction with any food or with sodium bicarbonate. Have others seen this reaction? I have tried potassium citrate up to 600 mg in 12 oz of water, and I never have this reaction. I want the bicarbonates for alkalinity, but I don't want the large dose of sodium from sodium bicarbonate. I was hoping to transition to potassium bicarbonates, supplementing about four grams of potassium (by dose) per day, and hopefully under one gram of sodium. This strange reaction to the potassium bicarbonate is throwing me back a little.