L-Theanine
by BRI Nutrition · capsule · 60 capsules
- Off the market since October 2023 (NIH)
- UPC X000RTQAEP
- DSLD label 219025
- Serving 1 vegetarian capsule
- 60 servings
L-Theanine by BRI Nutrition lists 2 ingredients, 2 with an amount per serving of 1 vegetarian capsule, such as 200 mg of L-theanine and 100 mg of inositol. Its current label entered the NIH Dietary Supplement Label Database on April 23, 2020.
What is in L-Theanine?
Each row as the label prints it, per serving of 1 vegetarian capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| L-Theanine | 200 mg | Higher than 61% of 1,602 products listing theanine (median 100 mg). Per day at the most servings: 400 mg. | |
| Inositol | 100 mg | Higher than 76% of 4,042 products listing inositol (median 30 mg). Per day at the most servings: 200 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 219025 (entered April 23, 2020), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records 1 to 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
6 products list the very same ingredients; the nearest amounts come first.
- Double Strength L-Theanine 200 mg SuntheanineNOW · off the market same ingredients
- L-Theanine Double Strength - 200 mgNOW · off the market same ingredients
- Theanine 200 mg + InositolNatural Grocers by Vitamin Cottage same ingredients
- L-Theanine 200 mgLuckyVitamin same ingredients
- L-Theanine 200 mgProtocol For Life Balance same ingredients
- L-Theanine 200 mgLongevity Medical Clinic same ingredients
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested Use: As a dietary supplement, take 1 capsule 1 to 2 times daily as needed, preferably on an empty stomach.
- Warnings
- Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
- Allergens and what it does not contain
- Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
- Storage
- Store in a cool, dry place after opening.
Source: label statements in DSLD label 219025.
What else is on the label?
Other ingredients: Rice Flour, Vegetable Cellulose, Magnesium Stearate, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Good Manufacturing Practice Sourced from a GMP Certified Facility Quality Assured; Made in USA.
How many labels does L-Theanine have?
One label is on file, entered on April 23, 2020.
- Label 219025 (current) Entered April 23, 2020 · off the market October 24, 2023 · 60 capsules · UPC X000RTQAEP
DSLD also links this label to: L-Theanine Extra Strength (image difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names BR International, LLC (distributor), Lewes, DE, 19958. All BRI Nutrition products.