Buckwheat
Buckwheat, a whole grain low in potassium, is a rich source of vitamins B, magnesium, iron, and fibre. Additionally, it is gluten-free, making it appropriate for those with celiac disease or gluten intolerance alongside kidney diseases. A half-cup serving of buckwheat (84 grams) contains 0.8 mg of sodium, 391 mg of potassium, 295 mg of phosphorus, and 11 grams of protein.
