Potassium Citrate

Commercial citric acid comes from sugar fermentation at industrial scale. Manufacturers react the purified acid with a potassium base and crystallize the salt. It is a manufactured food ingredient, not a fruit extract.⁷

1. 01 // Source Sugar and potassium Sugar feeds citric acid fermentation; potassium hydroxide or carbonate supplies the potassium for the final salt.
2. 02 // Process Ferment the sugar Selected microbes produce citric acid, which processors separate and purify from the fermentation mixture.
3. 03 // Process React and crystallize Citric acid reacts with the potassium base, and potassium citrate crystallizes from the resulting solution.
4. 04 // Output Potassium citrate White, water soluble crystals or granules are supplied for blending into food.

1. 01

   Adjusts urinary acidity

   After a dog eats it, potassium citrate can make urine less acidic. Formulators use it in urinary diets, but the complete recipe determines the final urine response.^1,2,3

2. 02

   Adds potassium

   The salt supplies potassium without adding sodium. It lets a formulator adjust a mineral target while also influencing acidity.^8,9

3. 03

   Buffers the recipe

   Food manufacturers use it for pH control and buffering. Industrial fermentation supplies the citric acid used to make this standardized ingredient.^7,8

How much Dog studies tested supplements at 150 and 130 to 211 mg/kg body weight daily; those doses are not typical kibble inclusion rates.^1,2

1. Brands say

   It supplies potassium to the food

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   Potassium makes up about 38.3% of the dry salt. That is a real mineral contribution, but an ingredient list alone cannot tell you how much potassium the finished food contains.⁹

2. Vets say

   It raises a dog's urine pH

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   In a 12 dog trial, average urine pH rose by 0.2 units, an insignificant change. A 7 dog trial found a larger rise at certain times. Dose, timing and the rest of the diet matter.^1,2

3. Brands say

   It prevents calcium oxalate stones

   Outruns the evidence

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   In the 12 dog trial, 3 Miniature Schnauzers had lower urinary calcium oxalate supersaturation, a modeled risk marker. Veterinary consensus says properly designed trials measuring stone recurrence have not been published.^1,3

4. Owners say

   It dissolves existing calcium oxalate stones

   Outruns the evidence

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   The Merck Veterinary Manual says calcium oxalate stones in dogs do not dissolve with medical treatment. Potassium citrate has a possible role in a prevention plan after stone removal, not in clearing an existing stone.⁴