Supplements (174) for Theanine


Theanine is an amino acid primarily found in green and black tea leaves that helps promote relaxation without causing drowsiness. It is frequently used to enhance mental focus, support cognitive function, and reduce the impact of daily stress.

Across 177 Theanine products
Optimal dose100 mg – 400 mg
Price$22.19median
Price per serving$0.61median
Price per 100 mg$0.56median
Dose per serving100 mgmedian
Top forms L-Theanine
Image
82
L-Theanine, 1 Liquid(s) NOW
4.7
★ ★ ★ ★ ★
(740 ratings)
Theanine: 285 mg
Image
85
Double Strength L-Theanine 200 mg, 120 Capsule(s) NOW
4.7
★ ★ ★ ★ ★
(45175 ratings)
Theanine: 200 mg
Theanine: 200 mg
Image
85
Double Strength L-Theanine 200 mg, 60 Capsule(s) NOW
4.7
★ ★ ★ ★ ★
(43456 ratings)
Theanine: 200 mg
Image
87
Sleep Regimen 3-in-1, 90 Capsule(s) NOW
4.5
★ ★ ★ ★ ★
(1303 ratings)
Theanine: 200 mg
Theanine: 200 mg
Image
85
+2
L-Theanine 100 mg, 90 Capsule(s) NOW
4.7
★ ★ ★ ★ ★
(17078 ratings)
Theanine: 100 mg
Theanine: 100 mg
Theanine: 100 mg
Image
83
L-Theanine 200 mg, 60 Softgel(s) SR Sports Research
4.5
★ ★ ★ ★ ★
(18715 ratings)
Theanine: 200 mg
Image
82
L-Theanine 150 mg, 90 Veggie Cap(s) Doctor's Best
4.7
★ ★ ★ ★ ★
(7337 ratings)
Theanine: 150 mg
Image
83
Chewable L-Theanine 100 mg, 90 Tablet(s) NOW
4.7
★ ★ ★ ★ ★
(3726 ratings)
Theanine: 100 mg
Image
86
+4
Anxiety & Stress Relief, 50 Tablet(s) Nature's Bounty
4.5
★ ★ ★ ★ ★
(10056 ratings)
Theanine: 200 mg
Image
83
Theanine 200 mg, 60 Veggie Cap(s) Jarrow Formulas
4.7
★ ★ ★ ★ ★
(6241 ratings)
Theanine: 200 mg
Image
82
Theanine 100 mg, 60 Veggie Cap(s) Jarrow Formulas
4.7
★ ★ ★ ★ ★
(5111 ratings)
Theanine: 100 mg
Image
85
L-Theanine 200 mg, 60 Capsule(s) Nature's Way
4.6
★ ★ ★ ★ ★
(1408 ratings)
Theanine: 200 mg
Image
83
L-Theanine 200 mg, 180 Capsule(s) Nature's Way
4.6
★ ★ ★ ★ ★
(1412 ratings)
Theanine: 200 mg
Image
82
+2
Elite, 120 Capsule(s) Eu Natural
4.2
★ ★ ★ ★ ★
(3508 ratings)
Theanine: 200 mg
Image
84
+2
Theanine: 200 mg
Theanine: 200 mg
1–20 of 174
Next ›