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Ketchup
The bottom line
Tomato concentrate plus salt plus sugar: modest spoonfuls are fine for most, but it is poured, not spooned, in practice.
A healthier swap
A smaller squeeze, low-salt versions, or salsa-style fresh tomato and herb mixes if potassium allows; mustard in small amounts for a lower-sugar hit.
Understand the nutrients
Frequently asked questions
How much ketchup is 'a serving'?
Labels count about a tablespoon — most people use three. At that level its sodium and sugar both become material in a day's budget.
These pages are general education about eating with kidney disease, dialysis or a kidney transplant. They are not medical advice and do not replace your own care plan. Kidney diets are individual: what is right for you depends on your stage, your blood tests, your medicines and your other conditions. Always talk to your care team or renal dietitian before changing what you eat, and never stop or change a medicine because of something you read here.
