Q. Be careful taking over-the-counter potassium! It can build up in your body and eventually stop your heart. Consult your doctor about the proper dosage before starting. I nearly killed myself taking potassium on my own a few years ago.
A. Potassium is one of those “Goldilocks” minerals—both too little and too much can be deadly. A physician should use a blood test to monitor anyone who takes a potassium supplement, whether it is prescription or over the counter.