SuppHelper
search
All
Vitamin
Minerals
Botanical
Amino acids
Fatty acids
Other
Lysine
Histidine
Taurine
Glycine
Beta-Alanine
Proline
Glutamine
5-HTP
Citrulline
Isoleucine
Aspartic Acid
Theanine
Glutathione
Leucine
Valine
Glutamic Acid
Phenylalanine
Methionine
Arginine
Alanine
Tyrosine
Cysteine
Tryptophan
Products (98) for
Goals:
Mood SupportCognitive SupportSleep SupportEnergyStress ReliefMental FocusBrain HealthWeight LossProductivity Boost
Image
88
L-Theanine, 1 Liquid(s) NOW
4.7
★ ★ ★ ★ ★
(697 ratings)
Theanine: 285 mg
Other sellers (3)
Image
87
L-Theanine 200 mg, 60 Capsule(s) California Gold Nutrition
4.7
★ ★ ★ ★ ★
(15182 ratings)
Theanine: 200 mg
Other sellers (0)
Image
88
Double Strength L-Theanine 200 mg, 120 Capsule(s) NOW
4.7
★ ★ ★ ★ ★
(41457 ratings)
Theanine: 200 mg
Other sellers (5)
Image
90
Double Strength L-Theanine 200 mg, 60 Capsule(s) NOW
4.7
★ ★ ★ ★ ★
(41433 ratings)
Theanine: 200 mg
Other sellers (5)
Image
88
Sleep Regimen 3-in-1, 90 Capsule(s) NOW
4.5
★ ★ ★ ★ ★
(1136 ratings)
Theanine: 200 mg
Other sellers (5)
Image
85
L-Theanine 200 mg, 60 Capsule(s) Advance Physician Formulas
4.7
★ ★ ★ ★ ★
(619 ratings)
Theanine: 200 mg
Other sellers (1)
Image
88
L-Theanine 200 mg, 60 Softgel(s) SR Sports Research
4.4
★ ★ ★ ★ ★
(17738 ratings)
Theanine: 200 mg
Other sellers (2)
Image
89
Elite, 120 Capsule(s) Eu Natural
4.2
★ ★ ★ ★ ★
(3329 ratings)
Theanine: 200 mg
Other sellers (2)
Image
85
L-Theanine 150 mg, 90 Veggie Cap(s) Doctor's Best
4.6
★ ★ ★ ★ ★
(8126 ratings)
Theanine: 150 mg
Other sellers (4)
Image
91
L-Theanine & Caffeine, 60 Softgel(s) SR Sports Research
4.5
★ ★ ★ ★ ★
(4205 ratings)
Theanine: 200 mg
Other sellers (2)
Image
85
Triple Action Sleep, 60 Tablet(s) Solgar
4.3
★ ★ ★ ★ ★
(1955 ratings)
Theanine: 200 mg
Other sellers (3)
Image
90
Smart Caffeine with L-Theanine, 60 Capsule(s) NS Natural Stacks
4.4
★ ★ ★ ★ ★
(812 ratings)
Theanine: 200 mg
Other sellers (2)
Image
85
Anxiety & Stress Relief, 50 Tablet(s) Nature's Bounty
4.5
★ ★ ★ ★ ★
(9988 ratings)
Theanine: 200 mg
Other sellers (2)
Image
88
L-Theanine 200 mg, 180 Capsule(s) Nature's Way
4.6
★ ★ ★ ★ ★
(952 ratings)
Theanine: 200 mg
Other sellers (3)
Image
80
Theanine 200 mg, 60 Veggie Cap(s) Jarrow Formulas
4.7
★ ★ ★ ★ ★
(6008 ratings)
Theanine: 200 mg
Other sellers (5)
Image
80
Restful Sleep Blackberry Zen, 50 Gummy(ies) OLLY
4.4
★ ★ ★ ★ ★
(4924 ratings)
Theanine: 200 mg
Other sellers (3)
Image
82
Theanine Serene with Relora, 60 Tablet(s) Source Naturals Serene Science
4.6
★ ★ ★ ★ ★
(4667 ratings)
Theanine: 200 mg
Other sellers (2)
Image
89
Tranquil Sleep, 90 Softgel(s) Natural Factors Stress-Relax
4.4
★ ★ ★ ★ ★
(2029 ratings)
Theanine: 200 mg
Other sellers (2)
Image
85
Energy + Focus, 60 Capsule(s) ZHOU
4.2
★ ★ ★ ★ ★
(256 ratings)
Theanine: 200 mg
Other sellers (3)
Image
78
Z-Matrix, 240 Capsule(s) Evlution Nutrition
4.7
★ ★ ★ ★ ★
(3148 ratings)
Theanine: 200 mg
Other sellers (3)
Image
91
Tranquil Sleep, 120 Tablet(s) Natural Factors Stress-Relax
4.5
★ ★ ★ ★ ★
(3218 ratings)
Theanine: 200 mg
Other sellers (2)
Image
78
Theanine Serene, 60 Tablet(s) Source Naturals Serene Science
4.5
★ ★ ★ ★ ★
(2758 ratings)
Theanine: 200 mg
Other sellers (2)
Image
88
Extra Strength Tranquil Sleep, 60 Tablet(s) Natural Factors Stress-Relax
4.5
★ ★ ★ ★ ★
(2408 ratings)
Theanine: 200 mg
Other sellers (2)
Image
78
Theanine Serene, 120 Tablet(s) Source Naturals
4.7
★ ★ ★ ★ ★
(1139 ratings)
Theanine: 200 mg
Other sellers (2)
Image
83
L-Theanine 200 mg, 60 Capsule(s) Protocol For Life Balance
4.7
★ ★ ★ ★ ★
(674 ratings)
Theanine: 200 mg
Other sellers (3)
Image
94
Sleep Nighttime Powder, 6 Liquid(s) youtheory
4.3
★ ★ ★ ★ ★
(170 ratings)
Theanine: 200 mg
Other sellers (2)
Image
86
Tranquil Sleep, 45 Softgel(s) Natural Factors Stress-Relax
4.4
★ ★ ★ ★ ★
(2030 ratings)
Theanine: 200 mg
Other sellers (1)
No Image
82
Day Starter, 60 Tablet(s) Source Naturals
4.9
★ ★ ★ ★ ★
(7 ratings)
Theanine: 200 mg
Other sellers (0)
Image
78
L-Theanine 200 mg Double Strength, 60 Veggie Cap(s) Swanson
4.7
★ ★ ★ ★ ★
(472 ratings)
Theanine: 200 mg
Other sellers (1)
Image
82
Suntheanine L-Theanine 100 mg, 120 Tablet(s) Natural Factors Stress-Relax
4.7
★ ★ ★ ★ ★
(3593 ratings)
Theanine: 200 mg
Other sellers (2)
1–20 of 98

SuppHelper

Compare supplements smarter. Science-backed, user-rated, updated daily.

Explore

  • Compare Supplements
  • Health Goals
  • Stacks

Legal

  • Privacy Policy
  • Terms of Use
  • Medical Disclaimer

Stay in the Loop

© 2025 SuppHelper. All rights reserved.