How are you? Are there other symptoms present? Hyperkalemia or higher-than-normal levels of potassium in the blood may be caused by an increase in total body potassium or the excess release of potassium from the cells into the bloodstream. Kidney failure, Glomerulonephritis, obstructive uropathy, tissue injury, medicine side effect, and hemolytic conditions should be ruled out. It is best that you check with your doctor for proper evaluation. Your doctor should assess your kidney function before and while you take potassium supplements. Take care and do keep us posted.