Supplements

Products (120) for Theanine

Theanine is an amino acid primarily found in tea leaves, known for its ability to promote relaxation and calm without causing drowsiness. It supports cognitive functions like focus and attention, often enhancing mental c...

Median$19.97/product$0.54/serving$0.52/100 mg100 mg amount
Best forms L-Theanine
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95
L-Theanine, 1 Liquid(s) NOW
4.7
(709 ratings)
Theanine: 285 mg
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98
Theanine: 200 mg
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97
Double Strength L-Theanine 200 mg, 120 Capsule(s) NOW
4.7
(42165 ratings)
Theanine: 200 mg
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98
Double Strength L-Theanine 200 mg, 60 Capsule(s) NOW
4.7
(41779 ratings)
Theanine: 200 mg
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97
Theanine: 200 mg
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97
Sleep Regimen 3-in-1, 90 Capsule(s) NOW
4.5
(1145 ratings)
Theanine: 200 mg
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95
Theanine: 100 mg
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97
Theanine: 100 mg
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96
L-Theanine 200 mg, 60 Softgel(s) SR Sports Research
4.4
(17848 ratings)
Theanine: 200 mg
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92
+3
L-Theanine 100 mg, 90 Capsule(s) NOW
4.7
(16519 ratings)
Theanine: 100 mg
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96
+3
Theanine: 200 mg
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95
L-Theanine 150 mg, 90 Veggie Cap(s) Doctor's Best
4.6
(8126 ratings)
Theanine: 150 mg
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95
Theanine 100 mg, 60 Veggie Cap(s) Jarrow Formulas
4.6
(6464 ratings)
Theanine: 100 mg
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96
Theanine 200 mg, 60 Veggie Cap(s) Jarrow Formulas
4.7
(6047 ratings)
Theanine: 200 mg
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96
+3
Elite, 120 Capsule(s) Eu Natural
4.2
(3329 ratings)
Theanine: 200 mg
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93
Chewable L-Theanine 100 mg, 90 Tablet(s) NOW
4.7
(3580 ratings)
Theanine: 100 mg
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93
+3
Theanine: 100 mg
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96
L-Theanine 200 mg, 60 Capsule(s) Nature's Way
4.6
(1062 ratings)
Theanine: 200 mg
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98
+14
Z-Matrix, 240 Capsule(s) Evlution Nutrition
4.7
(2767 ratings)
Theanine: 200 mg
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92
+3
Anxiety & Stress Relief, 50 Tablet(s) Nature's Bounty
4.5
(10003 ratings)
Theanine: 200 mg
1–20 of 120
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