Ingredient

L-theanine From Tea

Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add L-theanine to beverages like energy drinks and teas to promote relaxation and …

What is L-theanine From Tea?

L-theanine is an amino acid found naturally in tea leaves, particularly green tea. It is also produced synthetically for use as a dietary supplement and food additive. It is known for its calming and focus-enhancing properties.

Is L-theanine From Tea vegan?

L-theanine From Tea is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.

Is L-theanine From Tea gluten-free?

It does not contain gluten.

Is L-theanine From Tea a major allergen?

L-theanine is not derived from any of the 9 major allergens.

What is L-theanine From Tea used for?

Manufacturers add L-theanine to beverages like energy drinks and teas to promote relaxation and mental clarity without drowsiness.

Is L-theanine From Tea safe?

L-theanine is generally recognized as safe (GRAS) by the FDA for use in food.

Why it's used

Manufacturers add L-theanine to beverages like energy drinks and teas to promote relaxation and mental clarity without drowsiness. It may also be found in some supplements and functional foods.

Health notes

L-theanine is generally recognized as safe (GRAS) by the FDA for use in food. Research suggests it may promote relaxation and improve cognitive function. JECFA has evaluated L-theanine and established an acceptable daily intake. Evidence for its effects is generally positive, though more research is ongoing.

Allergen info

L-theanine is not derived from any of the 9 major allergens. It does not contain gluten.

Foods that contain L-theanine From Tea

Compare products →

Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Last updated: October 5, 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.