Ingredient

Kefir Water

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers use kefir water as a probiotic base for beverages, adding a natural effervescence …

What it is

Kefir water, also known as water kefir, is a fermented beverage made from sugar water, kefir grains, and sometimes fruit or flavorings. The kefir grains, which are a symbiotic culture of bacteria and yeasts, ferment the sugar to produce a lightly carbonated, slightly tangy drink.

Why it's used

Manufacturers use kefir water as a probiotic base for beverages, adding a natural effervescence and a mild, tangy flavor. It is often found in probiotic drinks, teas, and other non-alcoholic beverages, where it contributes to the drink's complexity and perceived health benefits.

Health notes

Kefir water is generally recognized as safe (GRAS) by the FDA for use in food. As a fermented product, it contains probiotics, which are live microorganisms that may benefit gut health, though research is ongoing. International bodies like JECFA have evaluated similar fermented products. Evidence for specific health benefits is still developing, and it is not intended to treat or prevent disease.

Allergen info

Kefir water is not derived from any of the nine FDA major allergens. It is also typically gluten-free, though cross-contamination can occur in processing facilities.

Products containing Kefir Water

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.