In the U.S. conventional hemodialysis patients typically must limit their potassium intake to 2 grams (2000 milligrams) per day. There could be some variation based on your lab values and the type of dialysis that you do. Your doctor or dietitian can advise you about what diet limits you need to follow. Following your potassium limit is very important because too much potassium can affect how your heart beats and even stop your heart. You might want to visit http://www.kidneyschool.org to read the nutrition module.