Ingredient

Lactobacillus Reuteri

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Source
Not animal-derived
Allergen
No
Role in food
Lactobacillus reuteri is added to foods as a probiotic to potentially support gut health. …

What it is

Lactobacillus reuteri is a type of bacteria that naturally lives in the digestive tracts of humans and animals. It is often grown in a laboratory for use in foods and supplements. It is a probiotic, meaning it is thought to provide health benefits when consumed.

Why it's used

Lactobacillus reuteri is added to foods as a probiotic to potentially support gut health. It is most often found in fermented dairy products like yogurt and kefir, as well as in some cheese and powdered drink mixes.

Health notes

Lactobacillus reuteri is generally recognized as safe (GRAS) by the FDA for use in food. Research is ongoing into its potential health effects, particularly for gut health and immunity. International bodies like EFSA have evaluated probiotics, but specific evaluations for L. reuteri may vary. Evidence for specific health benefits is still developing and can be mixed depending on the strain and health outcome studied.

Allergen info

Lactobacillus reuteri is not derived from any of the 9 FDA major allergens. It is a bacterium and does not contain gluten.

Products containing Lactobacillus Reuteri

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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.