Theanine XR Stress Relief
by Life Extension · tablet or pill · 30 vegetarian tablets
- On the market (NIH)
- UPC 7 37870 24293 2
- DSLD label 328727
- Serving 1 vegetarian tablet
- 30 servings
Theanine XR Stress Relief by Life Extension lists 3 ingredients, 3 with an amount per serving of 1 vegetarian tablet, such as 50 mg of calcium, 40 mg of phosphorus and 400 mg of theanine XR. Its current label entered the NIH Dietary Supplement Label Database on May 21, 2025.
What is in Theanine XR Stress Relief?
Each row as the label prints it, per serving of 1 vegetarian 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 |
|---|---|---|---|
| Calciumas Dicalcium Phosphate | 50 mg | 4% | 72% of 17,831 products listing calcium give more (median 115 mg). |
| Phosphorusas Dicalcium Phosphate | 40 mg | 3% | 76% of 3,786 products listing phosphorus give more (median 90 mg). |
| Theanine XRas L-Theanine | 400 mg | Higher than 97% of 1,602 products listing theanine (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 328727 (entered May 21, 2025), 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?
The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:
- Its 400 mg of theanine is higher than 97% of the 1,602 theanine products that print an amount; 18 list more.
The NIH database records one serving 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 Theanine XR Stress Relief's, rare ingredients counting for more.
- L-Theanine 200 mgSource Naturals 2 shared, 64% alike
- Calcium Hydroxyapatite Caps 250 mgNOW · off the market 2 shared, 56% alike
- Dicalcium Phosphate (DCP)PureBulk.com 2 shared, 56% alike
- Cal ApatiteMetagenics 2 shared, 56% alike
- Cal Apatite 1000Metagenics 2 shared, 56% alike
- Policosanol 10 mgIndiana Botanic Gardens · off the market 2 shared, 56% 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
- Directions: Take one (1) tablet daily, or as recommended by a healthcare practitioner.
- Warnings
- Read the entire label and follow the directions carefully prior to use.
- Warnings: Keep out of reach of children.
- Do not exceed recommended dose. Do not purchase if outer seal is damaged.
- Consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
- To report a serious adverse event or obtain product information, contact 1-866-280-2852.
- Allergens and what it does not contain
- Gluten free Non GMO Le certified
- Storage
- Store tightly closed in a cool, dry place.
Source: label statements in DSLD label 328727.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Hydroxypropyl Methylcellulose, Hydroxypropyl Cellulose, Stearic Acid, Silica, Stearate, Croscarmellose Sodium, Glycerin.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Non GMO Le certified.
How many labels does Theanine XR Stress Relief have?
One label is on file, entered on May 21, 2025.
- Label 328727 (current) Entered May 21, 2025 · on the market · 30 vegetarian tablets · UPC 7 37870 24293 2
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Quality Supplements and Vitamins, Inc. (distributor), Ft. Lauderdale, FL. All Life Extension products.