L-Theanine 200 mg
by Source Naturals · tablet or pill · 30 tablets
- On the market (NIH)
- UPC 0 21078 01498 0
- DSLD label 295952
- Serving 1 tablet
- 30 servings
L-Theanine 200 mg by Source Naturals lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 76 mg of calcium and 200 mg of L-theanine. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2023.
What is in L-Theanine 200 mg?
Each row as the label prints it, per serving of 1 tablet. 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 |
|---|---|---|---|
| Calcium | 76 mg | 8% | 64% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 152 mg. |
| L-Theanine | 200 mg | Higher than 61% of 1,602 products listing theanine (median 100 mg). Per day at the most servings: 400 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 295952 (entered September 25, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). 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?
The products whose ingredient lists overlap most with L-Theanine 200 mg's, rare ingredients counting for more.
- TheanineNatrol 1 shared, 69% alike
- L-TheanineOL Olympian Labs · off the market 1 shared, 69% alike
- L-Theanine 200 mgGood 'N Natural · off the market 1 shared, 69% alike
- L-Theanine 100 mgNewflower Farmers Markets 1 shared, 69% alike
- L-Theanine 200 mgVitamin World 1 shared, 69% alike
- TheanineLiveLong · off the market 1 shared, 69% alike
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: 1 tablet 1 to 2 times daily.
- Warnings
- Warning: Not for use by children or women who are pregnant, may become pregnant, or breastfeeding. If you are taking antidepressant drugs, such as MAOIs or SSRIs, consult your healthcare professional before taking this product.
- Do not use if tamper-evident seal is broken or missing.
- Keep out of the reach of children.
- Allergens and what it does not contain
- Suitable for vegetarians and hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
Source: label statements in DSLD label 295952.
What else is on the label?
Other ingredients: Dibasic Calcium Phosphate, Microcrystalline Cellulose, Magnesium Stearate, Stearic Acid, Silica, Modified Cellulose Gum, Hydroxypropyl Cellulose.
How many labels does L-Theanine 200 mg have?
2 labels are on file under this name since April 25, 2017: other sizes, label designs and reformulations. The current one leads this page.
- Label 295952 (current) Entered September 25, 2023 · on the market · 30 tablets · UPC 0 21078 01498 0
- Label 72568 Entered April 25, 2017 · off the market December 22, 2021 · 60 tablets · UPC 0 21078 01499 7
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.