Skip to main content
PlainVitamins

Amino acid · Supplement ingredient

Theanine

Theanine is listed on 1,205 U.S. supplement product labels in the NIH DSLD, #183 of 4,614 by label frequency.

1,205
Products
#183 of 4,614
By frequency
Verify with NIH DSLD → · FDA Daily Value reference → · Page 6 of 25

How common is Theanine?

Number of supplement labels listing Theanine vs nearby amino acid ingredients

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Products containing Theanine

L-Theanine 200 mg
Source Naturals Serene Science
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
LuckyVitamin
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Puritan's Pride
7 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
Puritan's Pride
7 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
DaVinci Laboratories
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Protocol For Life Balance
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
Source Naturals Serene Science
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Evlution Nutrition
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
DaVinci Laboratories
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Vital Nutrients
3 ingredients · Amino acid/Protein
On Market
L-Theanine 200 mg
DaVinci Laboratories
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nature's Truth
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Longevity Medical Clinic
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Woodstock Vitamins
7 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Bluebonnet
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Pure Nootropics
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Bluebonnet
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Sports Research
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Country Life
5 ingredients · Other Combinations
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Bluebonnet
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Nature's Way
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg
Country Life
5 ingredients · Other Combinations
On Market
L-Theanine 200 mg
Nature's Lab
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Capsules
BulkSupplements.com
2 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Capsules
BulkSupplements.com
2 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Natural Mint Flavor
Vitamin World
9 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Plus Gaba 100 mg
Dr. Mercola
8 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Plus Gaba 100 mg
Dr. Mercola
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 200 mg Sweet Cherry
EZ Melts
11 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 250 mg
Kirkman
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 300
Everyday Health
3 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 400 mg
OL Olympian Labs
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 400 mg
Mental Refreshment
3 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 500 mg
BulkSupplements.com
2 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine 500 mg
BulkSupplements.com
2 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Calm Caps
Nature's Truth
11 ingredients · Other Combinations
On Market
L-Theanine Capsules 200 mg
Nootropics Depot
4 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Chewable 200 mg Tropical Fruit
Nature Made
14 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Chewables 200 mg Natural Lemon Lime Flavor
Solaray
20 ingredients · Other Combinations
On Market
L-Theanine Extra Strength
BRI Nutrition
6 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine Powder
Nootropics Depot
1 ingredient · Non-Nutrient/Non-Botanical
On Market
L-Theanine Powder
Herbadiet
1 ingredient · Non-Nutrient/Non-Botanical
On Market
L-Theanine Solution
Natrium Health
5 ingredients · Non-Nutrient/Non-Botanical
On Market
L-Theanine With Green Tea 200 mg
Solaray
4 ingredients · Other Combinations
On Market
LeanFuel Extreme
IronMagLabs
18 ingredients · Other Combinations
On Market
Libido-Max Pink
Applied Nutrition
27 ingredients · Other Combinations
On Market
Lights Out Sleep
ALLMAX
14 ingredients · Other Combinations
On Market

Nearby Ingredients in Amino acid

Other ingredients in the Amino acid category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.

Compare Theanine vs Leucine →

Leucine
4,582 products · Amino acid
Glutamine
2,515 products · Amino acid
Valine
1,971 products · Amino acid
Isoleucine
1,946 products · Amino acid
Tyrosine
1,744 products · Amino acid

Nationwide ingredients with similar DSLD presence

Two peer sets for Theanine: closest on total DSLD label listings (1,205 here) and closest on distinct brands that list it (489 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.

Similar label frequency

Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.

Similar brand breadth

Nearest other ingredients by distinct brands listing them (floored at ≥100 brands), distinct from the label-frequency row.

Frequently asked about Theanine

How many supplement products contain Theanine? ▼
1,205 supplement product labels in the NIH DSLD currently lists Theanine as an ingredient. By label frequency it ranks #183 of 4,614 among ingredients PlainVitamins ranks (same sort as /rankings/most-common-ingredients). Browse them below.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD). Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).

Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any 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. Ingredient figures are computed directly from 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.