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Ingredient

L-Theanine: doses on the label

33 published products list L-Theanine on a label two independent readers agreed on. 17 state an amount; 12 are at or above the 100 mg reference dose. 16 list it without an amount for it.

Reference dose

100 mg trial dose

Source: Owen et al., Nutr Neurosci 2008;11:193-198 (PMID 18681988) — 100 mg L-theanine together with 50 mg caffeine, against 50 mg caffeine alone and placebo, in 27 healthy volunteers (peer-reviewed trial)

The dose audit marks a product MET when the amount on its label, as two readers transcribed it, is at or above this figure, and UNDER otherwise. An ingredient inside a proprietary blend has no disclosed dose, so it is counted as undosed, never assumed adequate. A reference dose is the amount a cited study or guideline used; it is not a recommendation for anyone. Every reference dose and its source: how we rate.

Products with 100 mg L-Theanine or more

Every verified dose of L-Theanine

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Legion Athletics Pulse Pre Workout Pre-Workout 350 mg MET
Legion Athletics Thermogenic Pre Workout Pre-Workout 350 mg MET
Alani Nu Pre Workout Juicy Peach Pre-Workout 200 mg MET
Alani Nu Pre Workout Plus Bue Slush Pre-Workout 200 mg MET
NutraBio Caffplus Caffeine, Green Tea, Carnitine & Fiber 200 mg MET
Optimum Nutrition Amino Energy Hydration Plus Focus Electrolytes 200 mg MET
Transparent Labs Bulk Black Pre Workout Pre-Workout 200 mg MET
Transparent Labs Bulk Preworkout Pre-Workout 200 mg MET
Transparent Labs Lean Preworkout Pre-Workout 180 mg MET
Gorilla Mind Energy Drink Energy Drink 100 mg MET
Nutricost Caffeine L-Theanine Caffeine, Green Tea, Carnitine & Fiber 100 mg MET
PEScience Prolific Pre-Workout 100 mg MET
Jacked Factory Nitrosurge Pre-Workout 90 mg UNDER
Dymatize Energyze Pre Workout Strawberry Lemonade Pre-Workout 50 mg UNDER
EVL Nutrition Engn Pre-Workout 50 mg UNDER
Jocko Go Energy Drink Energy Drink 50 mg UNDER
RYSE Loaded Pre Pre-Workout 50 mg UNDER
Alani Nu Energy Drink Blue Slush Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Breezeberry Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Cherry Slush Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Cosmic Stardust Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Dream Float Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Hawaiian Shaved Ice Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Juicy Peach Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Pink Slush Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Watermelon Wave Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Drink Witchs Brew 2026 Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Energy Sticks Cotton Candy Energy Drink not enough datano amount printed on the label UNDER
Alani Nu Mini Energy Orange Kiss Energy Drink not enough datano amount printed on the label UNDER
Bucked Up Energy Case Web Energy Drink not enough datano amount printed on the label UNDER
Bucked Up Mini Energy Drink 7oz Energy Drink not enough datano amount printed on the label UNDER
CELSIUS Grape Slush Energy Drink not enough datano amount printed on the label UNDER
PEScience Versa Energy Drink Energy Drink not enough datano amount printed on the label UNDER

Each dose and status is the one the product’s own dose-audit table prints. Rows naming the same active on one label are added together first, as the audit does. Click a column header to sort.

Pre-Workouts with no L-Theanine on the label

43 of the 55 pre-workouts whose labels two readers transcribed list no L-Theanine under any name. This goes by the label as transcribed.

1st Phorm Endura Formance, 1st Phorm Megawatt, Animal (Universal Nutrition) Primal Preworkout Powder Supplement, BSN No Xplode Pre Workout, Cellucor C4 Original, Cellucor C4 Sport, Cellucor C4 Ultimate, EVL Nutrition Engn Shred Pre Workout Engine Powder 30 Serving, EVL Nutrition Pumpmode Non Stimulant Pump Accelerator, Ghost Pump Peach, Gorilla Mode, Gorilla Mode Base, Gorilla Mode Lightning, Gorilla Mode Nitric, Huge Supplements Wrecked Pre Workout, Jacked Factory Pumpsurge, Jocko Fuel Pre Workout, Jocko Fuel Pro Series Pre Workout, Kaged Pre Kaged, Kaged Pre Kaged Sport, Kaged Pre Kaged Stim Free, Kaged Pre Workout Elite, Kaged Pre Workout Elite Stimulant Free, Legion Athletics Forge Pre Workout Fat Burner, Legion Athletics Pulse Stim Free, MusclePharm Assault Pre-Workout, Naked Nutrition Pre Workout Powder, NutraBio Base Pre Workout, NutraBio Pre Workout, NutraBio Pre Workout Stimulant Free, Nutricost Pre Workout Complex with Creatine, Nutricost Pre-Workout Complex, Nutricost Stim Free Pre-Workout, Optimum Nutrition Amped Pre Workout Berry Fusion, Optimum Nutrition Gold Standard Pre Workout Fruit Punch, PEScience High Volume, Redcon1 Total War 20 Servings, Rule 1 Proteins Prelift, RYSE Godzilla Pre Workout, RYSE Loaded Pump, Transparent Labs Non Stim Pre Workout, Transparent Labs Pump Preworkout, Xwerks Ignite.

Energy Drinks with no L-Theanine on the label

23 of the 41 energy drinks whose labels two readers transcribed list no L-Theanine under any name. This goes by the label as transcribed.

1st Phorm Phorm Energy, 1st Phorm Phorm Energy 12 oz 12 Pack, Cellucor C4 Energy Carbonated Cereal Killer, Cellucor C4 Original Carbonated, Cellucor C4 Performance Energy Frozen Bombsicle, Cellucor C4 Performance Energy Mango Fuego, Cellucor C4 Ultimate Carbonated, Cellucor C4 Ultimate Energy Frost Carbonated, Cellucor C4 Ultimate Energy X Godzilla, CELSIUS Fizz Free Pink Lemonade, CELSIUS Sparkling Orange, EVL Nutrition BCAA Energy, EVL Nutrition BCAA Lean Energy 1, Ghost Energy Case Merica Pop, Kill Cliff Energy Joe Rogan's Spicy Pineapple, Kill Cliff Ignite Cherry Lime Grenade, Kill Cliff Ignite Smashing Citrus, Optimum Nutrition Essential Amino Energy Watermelon, ZOA Energy Lemon Lime 12oz, ZOA Energy Mango Splash, ZOA Energy Strawberry Watermelon, Zoa Pineapple Coconut 12oz, Zoa White Peach Zero Sugar 12 fl oz.

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