According to kidney.com, there are few studies to show if herbal supplements have any real benefits—and even less studies conducted on their effects on kidney patients. As with any over-the-counter medication you plan on taking, always consult with your physician to make sure they are right for you.
Dried Beans and Lentils
Nuts and Peanut Butter
Pretzels, Chips, and Crackers
Dates, Raisins, and Prunes
Leafy Green Vegetables
Including but not limited to: swiss chard, beet greens, collard greens, pumpkin, winter squash, and kale. These items all contain high amounts of potassium and should be avoided whenever possible—especially cooked. Half a cup of leafy green vegetables when cooked reduce to about one tablespoon. Eating half a cup of cooked greens will raise the potassium levels exponentially.
On a regular diet, you might be okay with a sodium intake of 2,000 milligrams per day. However, on a kidney disease-based diet you would need to consult with your physician to find a healthy number based on your specific case. Regardless, premade meals such as soups, frozen dinners, fast foods, and other premade meals are extremely high in sodium. Rely instead on the regular homemade variety of meals so you can monitor your sodium intake.
Potatoes are another vegetable that’s high in potassium. Avoid baked potatoes and French fries as these are too high in potassium no matter what. However, you can have mashed potatoes or hash browns if you soak your potatoes in water first for up to four hours, which reduces the amount of potassium.
Oranges and Orange Juice
Whole Wheat Bread
Pickled Foods, Relishes, and Olives
Dairy products have very high amounts of potassium, calcium (which contains phosphorus), and proteins, which means that for a person with a kidney disease these items must be avoided as much as possible. Try to substitute with unenriched rice milk, non dairy creamers, and sour cream without phosphate additives.
These sugary drinks are loaded down with phosphorus. Along with dark-colored sodas, you may also need to avoid certain lemonades, fruit-flavored waters, iced teas, and sugared juice-like drinks with 0% actual fruit. In addition, artificial sweeteners in diet sodas can increase kidney decline with a minimum of two diet drinks per day. Try instead flavored seltzer waters or as much regular water as possible.