My potassium level is 2.9. The level is supposed to be 3.6-5. I didn't think 2.9 is that low but the doctor seem somewhat alarmed and gave me some horse pills (huge) to take. I didn't start the pills because I do eat grape fruits, bananas and I take a medication that that has a side effect that causes my K level to rise. If I was not eating foods containing K and my meds weren't the way it is what would the levels be?:confused: