Is drinking coffee allowed or safe when you have chronic kidney disease?

A 8 oz cup of coffee (regular brewed) has about 120 mg of Potassium, 10 mg of Phosphorus and 90 mg of Caffeine. Coffee has a moderate amount of potassium and keep in mind that coffee counts toward your fluid that your allowed for the day. Plain black coffee is low in phosphorus but the problem is what you will add to it. Be careful because some creamers contain added phosphorus. Read your labels and look for PHOS additives!