Ingredient

L-theanine Powder

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Source
Not animal-derived
Allergen
No
Role in food
L-theanine is added to foods and beverages for its potential to promote relaxation without …

What it is

L-theanine is an amino acid found naturally in tea leaves, particularly green tea. It is typically produced synthetically or through extraction processes for use in supplements and foods.

Why it's used

L-theanine is added to foods and beverages for its potential to promote relaxation without causing drowsiness. It is often found in drinks like sparkling water, powdered drink mixes, and specialty supplements marketed for calming or mood support.

Health notes

In the U.S., L-theanine is generally recognized as safe (GRAS) by the FDA for use in certain food categories. Regulatory bodies like JECFA and EFSA have evaluated L-theanine, but specific intake limits are not universally established. Research suggests it may influence brain waves, potentially promoting a state of calm alertness, though effects can vary among individuals.

Allergen info

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

Products containing L-theanine Powder

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Peach Ginger Mood Enhancing Magnesium & Adaptogen Infused Sparkling Water, Peach Ginger shenzhenshi buxiang wangluo keji youxian gongsi Peach Ginger Mood Enhancing Magnesium & Adaptogen Infused Sparkling Water, Peach Ginger Water 6kcal 0.3Protein 0Fat 1.4Carbs Black Cherry Mood Enhancing Magnesium & Adaptogen Infused Sparkling Water, Black Cherry Lower Bottom Entertainment Inc. Black Cherry Mood Enhancing Magnesium & Adaptogen Infused Sparkling Water, Black Cherry Powdered Drinks 4kcal 0Protein 0Fat 1.1Carbs Blood Orange Calming Hemp Extract & Adaptogen Infused Sparkling Water, Blood Orange Drink Recess, Inc Blood Orange Calming Hemp Extract & Adaptogen Infused Sparkling Water, Blood Orange Water 6kcal 0Protein 0Fat 1.4Carbs Coconut Lime Calming Hemp Extract & Adaptogen Infused Sparkling Water, Coconut Lime Drink Recess, Inc Coconut Lime Calming Hemp Extract & Adaptogen Infused Sparkling Water, Coconut Lime Water 4kcal 0Protein 0Fat 1.1Carbs Blood Orange Mood Enhancing Magnesium & Adaptogen Infused Sparkling Water, Blood Orange shenzhenshi buxiang wangluo keji youxian gongsi Blood Orange Mood Enhancing Magnesium & Adaptogen Infused Sparkling Water, Blood Orange Water 6kcal 0Protein 0Fat 1.4Carbs Delta Imports, Inc. Coconut+Papaya 30Mg Cbc Sparkling Water, Coconut+Papaya Water 0kcal 0Protein 0Fat 0Carbs Pomegranate Hibiscus Calming Hemp Extract & Adaptogen Infused Sparkling Water, Pomegranate Hibiscus Drink Recess, Inc Pomegranate Hibiscus Calming Hemp Extract & Adaptogen Infused Sparkling Water, Pomegranate Hibiscus Water 6kcal 0.3Protein 0Fat 1.4Carbs Delta Imports, Inc. Blackberry Cbd Sparkling Water, Blackberry Water 0kcal —Protein 0Fat 0Carbs Peach Ginger Calming Hemp Extract & Adaptogen Infused Sparkling Water, Peach Ginger Drink Recess, Inc Peach Ginger Calming Hemp Extract & Adaptogen Infused Sparkling Water, Peach Ginger Specialty Formula Supplements 6kcal 0.3Protein 0Fat 1.4Carbs Black Cherry Calming Hemp Extract & Adaptogen Infused Sparkling Water, Black Cherry Drink Recess, Inc Black Cherry Calming Hemp Extract & Adaptogen Infused Sparkling Water, Black Cherry Specialty Formula Supplements 4kcal 0Protein 0Fat 1.1Carbs Raspberry Lemon Mood Magnesium & Adaptogen Infused Sparkling Water, Raspberry Lemon Red Peacock Brands Raspberry Lemon Mood Magnesium & Adaptogen Infused Sparkling Water, Raspberry Lemon Water 6kcal 0Protein 0Fat 1.7Carbs Lime Citrus Mood Magnesium & Adaptogen Infused Sparkling Water, Lime Citrus Red Peacock Brands Lime Citrus Mood Magnesium & Adaptogen Infused Sparkling Water, Lime Citrus Water 6kcal 0Protein 0Fat 1.7Carbs
Natural Flavors (13 products) Filtered Water (11 products) Lemon Balm Powder (11 products) Pear Juice Concentrate (9 products) Ginseng Powder (8 products) Citric Acid (7 products) Monk Fruit Extract (7 products) Lemon Juice Concentrate (6 products) Recess Magnesium Blend (6 products) Magnesium Ascorbate (6 products)

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.