Natural Factors Stress-Relax · Amino acid/Protein supplement
Suntheanine L-Theanine 125 mg
5 ingredients on file in the NIH Dietary Supplement Label Database, top 75% by ingredient count. Off-market, label data preserved for reference.
- 5
- Ingredients
- Top 75%
- By ingredient count
- 4
- Nutrient categories
The verdict
Suntheanine L-Theanine 125 mg pairs a simpler-than-average formula with no disclosed Daily Value data.
- 25th pctile
- ingredient complexity, US
- 0%
- ingredients DV-disclosed
- -8
- vs amino acid/protein avg (13)
Where Suntheanine L-Theanine 125 mg sits nationally
Ingredient count across every DSLD-listed product
5 74100th of 113538 higher than 28,650 of 113,538 DSLD-listed products
every DSLD-listed product (30+ ingredients folded into one band), bucketed by value
Each bar is a band; taller bars hold more DSLD-listed products. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source NIH Dietary Supplement Label Database (DSLD) · 2026-09-04
Suntheanine L-Theanine 125 mg is a amino acid/protein supplement by Natural Factors Stress-Relax in capsule form, listing 5 ingredients in the NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. Currently listed as off-market (no longer available for purchase, but label data is preserved). Daily Value percentages shown below are based on FDA reference daily intake amounts for adults.
Product Details
- Type
- 🧬 Amino acid/Protein
- Form
- Capsule
- Database Entry Date
- 2015-10-22
- Ingredients
- 5
Supplement Facts (5 Ingredients)
How does Suntheanine L-Theanine 125 mg compare?
Ingredients listed on each label, against the amino acid/protein category average of 12.7. Data from the NIH DSLD.
Suntheanine L-Theanine 125 mg lists 15 ingredients fewer than 1 Up Whey Chocolate & Peanut Butter Blast. That is 8 below the amino acid/protein average.
What the Label Data Shows
According to NIH DSLD label rows, Suntheanine L-Theanine 125 mg sits in the top 75% of products with a countable formula by declared ingredient count.
Suntheanine L-Theanine 125 mg is a compact, 5-ingredient amino acid/protein supplement from Natural Factors Stress-Relax, sold in capsule form, cataloged in the NIH Dietary Supplement Label Database (DSLD). These ingredients span 4 nutrient categories, other, non-nutrient/non-botanical, botanical, mineral, reflecting a multi-component formula rather than a single-nutrient product.
With only 5 ingredients on the label, 5 of 5 do not have a percentage Daily Value in this DSLD source record, which is not evidence that an FDA reference value does or does not exist.
Market status matters for supplement research. This product is currently listed as off-market in the DSLD, with its label first entered into the database on 2015-10-22. Off-market products are no longer being produced or distributed under this label, but the DSLD preserves their historical label data for researchers, consumers checking older bottles, and for tracking how formulations have evolved.
About the DSLD database
The DSLD is a label database, not an FDA approval list, under the 1994 DSHEA framework, dietary supplements do not require pre-market approval, and label information reflects what manufacturers self-declare rather than independent laboratory verification. This page presents factual label data for reference only and is not medical advice; consult a licensed healthcare provider before making decisions about any supplement.
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) Supplement label data for Suntheanine L-Theanine 125 mg: ingredients, % Daily Value, market status, brand · 2026 DSLD captures manufacturer-self-declared label information; the NIH does not verify accuracy or evaluate safety/efficacy. Dietary supplements are regulated under DSHEA 1994, no pre-market FDA approval is required.
Ingredient Breakdown by Category
Daily Value Coverage
Frequently Asked Questions
What ingredients are in Suntheanine L-Theanine 125 mg? ▼
Who manufactures Suntheanine L-Theanine 125 mg? ▼
Is Suntheanine L-Theanine 125 mg still available for purchase? ▼
What type of supplement is Suntheanine L-Theanine 125 mg? ▼
Data Sources & Methodology
Data as of 2025. Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD).
Supplement label data sourced from the Source: NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. The DSLD contains label information from dietary supplement products marketed in the United States.
Daily Value (DV) percentages are based on Source: FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults. Products marked "Off Market" may no longer be available for purchase but their label data remains in the database for reference.
Disclaimer, Not Medical Advice
Label data from the Source: NIH Dietary Supplement Label Database (DSLD). This information is for educational and reference purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting, stopping, or combining any dietary supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.
Read our methodology , how this data is sourced, computed, and verified.
Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. This page draws directly on the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.