FORM & FACT US · USD

United States · USD

Shopping market

US catalog · USD. Language selection does not change the products or confirm local availability.

English · Español · Français · Deutsch · Italiano · Português · 日本語 · 한국어 · 简体中文 · Nederlands · Polski · Svenska · Türkçe · العربية · हिन्दी · Русский · Bahasa Indonesia · Tiếng Việt · বাংলা · اردو · मराठी · తెలుగు · தமிழ்

Read the label. Compare clearly.

Explore US supplement labels in your language. Original ingredient declarations and quantities remain visible.

Historical source labels. Check the current package; formulation and actual contents are not independently verified.

Search common ingredients in this language; use original brand names.

Try one ingredient or the original brand name. Clear filters to broaden results.

Select two or three products to compare.

NIH DSLD · historical label · 2017-01-25

NOW

L-Theanine

Theanine · Powder

1 oz. / 28 Gram(s)

285 mg / 0.125 tspIngredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2019-04-25

Tomorrow's Nutrition

SunTheanine 150 mg

Theanine · Capsule

60 Veggie Capsule(s)

150 mg / 1 Capsule(s)Ingredient amount per label serving · Suntheanine L-Theanine

Select

NIH DSLD · historical label · 2019-04-25

Solgar

L-Theanine 150 mg

Theanine · Capsule

60 Vegetable Capsule(s)

150 mg / 1 Vegetable Capsule(s)Ingredient amount per label serving · Suntheanine L-Theanine

Select

NIH DSLD · historical label · 2020-06-24

Nutricost

L-Theanine 200 mg

Theanine · Capsule

240 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2020-06-24

Nature's Trove

L-Theanine 200 mg

Theanine · Capsule

120 Vegetarian Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2020-08-23

Life Extension

L-Theanine 100 mg

Theanine · Capsule

60 Vegetarian Capsule(s)

100 mg / 1 Vegetarian Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2020-08-23

Nootropics Depot

L-Theanine Powder

Theanine · Powder

4.4 Ounce(s) / 125 Gram(s)

100 mg / 0.1 Gram(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2021-02-25

NOW

L-Theanine 100 mg

Theanine · Capsule

90 Veg Capsule(s)

100 mg / 1 Veg Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2021-03-25

NOW

Double Strength L-Theanine 200 mg

Theanine · Capsule

60 Veg Capsule(s)

200 mg / 1 Veg Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2021-06-23

Nootropics Depot

L-Theanine Powder

Theanine · Powder

17.6 Ounce(s) / 500 Gram(s)

100 mg / 100 mgIngredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2022-07-21

Nutricost

L-Theanine 200 mg

Theanine · Capsule

120 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2023-02-21

Nootropics Depot

L-Theanine Capsules 200 mg

Theanine · Capsule

180 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2023-06-22

Pure Encapsulations

L-Theanine

Theanine · Capsule

60 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2023-06-22

Pure Encapsulations

L-Theanine

Theanine · Capsule

120 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · Suntheanine (L-Theanine)

Select

NIH DSLD · historical label · 2023-08-23

Pure Encapsulations

L-Theanine

Theanine · Capsule

120 Capsule(s)

400 mg / 2 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2023-11-22

Thorne

Theanine

Theanine · Capsule

90 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · Suntheanine (L-Theanine)

Select

NIH DSLD · historical label · 2024-01-24

Vital Nutrients

L-Theanine 200 mg

Theanine · Capsule

60 Vegetarian Capsule(s)

200 mg / 1 Vegetarian Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2024-01-24

Integrative Therapeutics

L-Theanine

Theanine · Capsule

60 Capsule(s)

200 mg / 2 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2024-07-25

Nature Made

L-Theanine Chewable 200 mg Tropical Fruit

Theanine · Tablet

50 Tablet(s)

200 mg / 1 Tablet(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2024-07-25

NOW

Double Strength L-Theanine 200 mg

Theanine · Capsule

120 Veg Capsule(s)

200 mg / 1 Veg Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2025-02-23

Sports Research

L-Theanine 200 mg

Theanine · Softgel

60 Softgel(s)

200 mg / 1 Softgel(s)Ingredient amount per label serving · Suntheanine (L-Theanine)

Select

NIH DSLD · historical label · 2025-05-21

Country Life

L-Theanine 200 mg

Theanine · Capsule

60 Vegan Capsule(s)

4.25 mg / 1 Capsule(s)Ingredient amount per label serving · Vitamin B6 (Pyridoxine Hydrochloride)

Select

NIH DSLD · historical label · 2025-04-24

Life Extension

L-Theanine 100 mg

Theanine · Capsule

60 Vegetarian Capsule(s)

100 mg / 1 Capsule(s)Ingredient amount per label serving · L-Theanine

Select

NIH DSLD · historical label · 2025-09-25

Thorne

Theanine

Theanine · Capsule

90 Capsule(s)

200 mg / 1 Capsule(s)Ingredient amount per label serving · Suntheanine (L-Theanine)

Select