Diseases & Conditions
Potassium Restriction for Children
Potassium requirements for children with kidney failure
Potassium is very important to the body. But too much potassium in the blood can be harmful. When your child's kidneys don’t work well, too much potassium can build up in the blood. Your child's body receives potassium from the foods he or she eats. Some children may have trouble staying at a normal potassium level. They may need to limit or avoid foods with high amounts of potassium.
What foods are high in potassium?
Most foods contain some amount of potassium. It is important to avoid or limit foods that are high in potassium if your child is on a low-potassium diet, or if your child's blood level of potassium is too high.
Some foods that are high in potassium include:
Use the following list as a guide in your child's food choices. Your child's healthcare provider or dietitian will let you know how much potassium your child can have each day.
Potassium content of foods
Most fruits, juices, and vegetables are high in potassium, especially when eaten raw. Be sure to watch your child's portion sizes. This is especially important if your child is on a low-potassium diet.
Low (0 to 100 mg)
Medium (101 to 200 mg)
High (more than 201 mg)
Raisins (2 Tbsp.)
Green or wax beans
Greens (collard, mustard)
Turnips (and greens)
Beets (and greens)
Dried beans and peas
French fries and chips
Sweet potatoes (yams)
100% bran cereals
Molasses and chocolate
(Portion sizes: 1/2 cup)
Some potassium can be removed from potatoes and other vegetables. Follow the instructions below:
Peel and dice the vegetable.
Soak the vegetable in hot water for 2 hours, or in cold water overnight.
Drain and rinse the vegetable thoroughly in warm water.
Cover the vegetable with fresh water, boil for 5 minutes, and simmer until done.
Drain and serve (boiled, fried, or mashed) or freeze for later.