Best Sleep & Relaxation Supplements

Top-rated sleep & relaxation supplements ranked by quality score. Last updated: Aug 2026.

California Gold Nutrition L-Theanine Featuring AlphaWave 100 mg
California Gold Nutrition L-Theanine Featuring AlphaWave 100 mg
Product 100 Brand 79
Nutricost L-Theanine, 200 mg
Nutricost L-Theanine, 200 mg
Product 100 Brand 100
California Gold Nutrition L-Theanine 100 mg
California Gold Nutrition L-Theanine 100 mg
Product 100 Brand 79
California Gold Nutrition L-Theanine 200 mg
California Gold Nutrition L-Theanine 200 mg
Product 100 Brand 79
Nutricost L-Theanine, 200 mg
Nutricost L-Theanine, 200 mg
Product 100 Brand 100
Sports Research L-Theanine, 200 mg
Sports Research L-Theanine, 200 mg
Product 100 Brand 100
Nutricost L-Theanine, 200 mg
Nutricost L-Theanine, 200 mg
Product 100 Brand 100
Doctor's Best L-Theanine, 150 mg, 90 Veggie Caps
Doctor's Best L-Theanine, 150 mg, 90 Veggie Caps
Product 100 Brand 61
Sports Research L-Theanine, 200 mg
Sports Research L-Theanine, 200 mg
Product 100 Brand 100
Swanson Suntheanine® L-Theanine 100 mg
Swanson Suntheanine® L-Theanine 100 mg
Product 100 Brand 97
Doctor's Best L-Theanine AlphaWave® 200 mg
Doctor's Best L-Theanine AlphaWave® 200 mg
Product 100 Brand 61
Nutricost Caffeine with L-Theanine
Nutricost Caffeine with L-Theanine
Product 100 Brand 100
Nutricost Caffeine With L-Theanine
Nutricost Caffeine With L-Theanine
Product 100 Brand 100
Nutricost L-Theanine, Unflavored
Nutricost L-Theanine, Unflavored
Product 100 Brand 100
NaturesPlus Pro L-Theanine 200 200 mg
NaturesPlus Pro L-Theanine 200 200 mg
Product 100 Brand 58
Solgar L-Theanine Free Form 150 mg
Solgar L-Theanine Free Form 150 mg
Product 100 Brand 78
Life Extension L-Theanine 100 mg
Life Extension L-Theanine 100 mg
Product 100 Brand 87
Swanson Suntheanine® L-Theanine 200 mg
Swanson Suntheanine® L-Theanine 200 mg
Product 100 Brand 97
Natural Factors Stress-Relax Suntheanine L-Theanine 125 mg
Natural Factors Stress-Relax Suntheanine L-Theanine 125 mg
Product 100 Brand 100
Force Factor L-Theanine 200 mg
Force Factor L-Theanine 200 mg
Product 100 Brand 79
NOW L-Theanine Pure Powder
NOW L-Theanine Pure Powder
Product 100 Brand 100
MaryRuth's Organic Valerian Root Liquid Extract
MaryRuth's Organic Valerian Root Liquid Extract
Product 100 Brand 83
Solaray Valerian 470 mg
Solaray Valerian 470 mg
Product 100 Brand 99
Solaray Valerian 470 mg
Solaray Valerian 470 mg
Product 100 Brand 99
Natural Vitality CALM® Magnesium Glycinate 108 mg
Natural Vitality CALM® Magnesium Glycinate 108 mg
Product 100 Brand 93
MaryRuth's L-Theanine Liquid Drops, Lemon Lime
MaryRuth's L-Theanine Liquid Drops, Lemon Lime
Product 100 Brand 83
Nature's Truth L-Theanine 200 mg
Nature's Truth L-Theanine 200 mg
Product 100 Brand 96
PrePrimal L-Theanine, 200 mg
PrePrimal L-Theanine, 200 mg
Product 100 Brand 58
VITAMATIC L-Theanine 200 mg
VITAMATIC L-Theanine 200 mg
Product 100 Brand 57
NaturesPlus Suntheanine L-Theanine 100 mg
NaturesPlus Suntheanine L-Theanine 100 mg
Product 100 Brand 58
Advance Physician Formulas L-Theanine, 200 mg
Advance Physician Formulas L-Theanine, 200 mg
Product 100 Brand 64
Nature's Way L-Theanine 100 mg
Nature's Way L-Theanine 100 mg
Product 100 Brand 100
DaVinci Laboratories L-Theanine, 200 mg
DaVinci Laboratories L-Theanine, 200 mg
Product 100 Brand 93
DaVinci Laboratories L-Theanine, 200 mg
DaVinci Laboratories L-Theanine, 200 mg
Product 100 Brand 93
Source Naturals L-Theanine, 200 mg
Source Naturals L-Theanine, 200 mg
Product 100 Brand 75
The Vitamin Shoppe L-Theanine 100 mg
The Vitamin Shoppe L-Theanine 100 mg
Product 100 Brand 83
The Vitamin Shoppe L-Theanine 200 mg
The Vitamin Shoppe L-Theanine 200 mg
Product 100 Brand 83
Source Naturals Serene Science®, L-Theanine, 200 mg
Source Naturals Serene Science®, L-Theanine, 200 mg
Product 100 Brand 75
The Vitamin Shoppe L-Theanine 100 mg
The Vitamin Shoppe L-Theanine 100 mg
Product 100 Brand 83
Pure Encapsulations L-Theanine 200 mg
Pure Encapsulations L-Theanine 200 mg
Product 100 Brand 81
Pure Encapsulations L-Theanine 200 mg
Pure Encapsulations L-Theanine 200 mg
Product 100 Brand 81
Natural Stacks Sleep Stack Vegetarian Capsules
Natural Stacks Sleep Stack Vegetarian Capsules
Product 100 Brand 79
Nature's Way L-Theanine 200 mg
Nature's Way L-Theanine 200 mg
Product 100 Brand 100
BlueBonnet L-Theanine 200 mg
BlueBonnet L-Theanine 200 mg
Product 100 Brand 98
Momentous L-Theanine
Momentous L-Theanine
Product 100 Brand 87
Best Naturals L-Theanine, 200 mg
Best Naturals L-Theanine, 200 mg
Product 100 Brand 74
Vital Nutrients L-Theanine 200 mg
Vital Nutrients L-Theanine 200 mg
Product 100 Brand 94
Source Naturals L-Theanine Caps, 200 mg
Source Naturals L-Theanine Caps, 200 mg
Product 100 Brand 75
XYMOGEN L-Theanine, 120 Vegetarian Capsules
XYMOGEN L-Theanine, 120 Vegetarian Capsules
Product 100 Brand 100
XYMOGEN L-Theanine, 60 Vegetarian Capsules
XYMOGEN L-Theanine, 60 Vegetarian Capsules
Product 100 Brand 100
Revive MD Suntheanine L-Theanine
Revive MD Suntheanine L-Theanine
Product 100 Brand 86
Vitacost L-Theanine from Suntheanine, 100 mg
Vitacost L-Theanine from Suntheanine, 100 mg
Product 100 Brand 84
Premier Research Labs L-Theanine
Premier Research Labs L-Theanine
Product 100 Brand 72
Olympian Labs L-Theanine, 400 mg
Olympian Labs L-Theanine, 400 mg
Product 100 Brand 71
SuperiorLabs L-Theanine
SuperiorLabs L-Theanine
Product 100 Brand 78
GNC Valerian Root
GNC Valerian Root
Product 100 Brand 96
Seeking Health L-Theanine 100 mg
Seeking Health L-Theanine 100 mg
Product 100 Brand 84
Nature's Lab L-Theanine 200 mg
Nature's Lab L-Theanine 200 mg
Product 100 Brand 97
Nutricost L-Theanine 200 mg
Nutricost L-Theanine 200 mg
Product 100 Brand 100
Solgar Valerian Root
Solgar Valerian Root
Product 100 Brand 78
Klaire Labs L-Theanine
Klaire Labs L-Theanine
Product 100 Brand 75
GNC L-Theanine 200 mg
GNC L-Theanine 200 mg
Product 100 Brand 96
Everyday Health L-Theanine 300
Everyday Health L-Theanine 300
Product 100 Brand N/A
Healthy Origins L-Theanine 100 mg
Healthy Origins L-Theanine 100 mg
Product 100 Brand 74
The Vitamin Shoppe L-Theanine 200 mg
The Vitamin Shoppe L-Theanine 200 mg
Product 100 Brand 83
Windmill Valerian Root 450 mg
Windmill Valerian Root 450 mg
Product 100 Brand 83
TerraVita Valerian Root (Certified Organic) 450 mg
TerraVita Valerian Root (Certified Organic) 450 mg
Product 100 Brand 70
Herb Pharm Nervous System Sleep Easier
Herb Pharm Nervous System Sleep Easier
Product 100 Brand 100
BlueBonnet L-Theanine 200 mg
BlueBonnet L-Theanine 200 mg
Product 100 Brand 98
California Gold Nutrition Valerian 500 mg
California Gold Nutrition Valerian 500 mg
Product 100 Brand 79
DaVinci Laboratories L-Theanine 200 mg
DaVinci Laboratories L-Theanine 200 mg
Product 100 Brand 93
Bucklebury Magnesium Glycinate with L-Theanine 350 mg
Bucklebury Magnesium Glycinate with L-Theanine 350 mg
Product 100 Brand 57
Doctor's Best Suntheanine L-Theanine 150 mg
Doctor's Best Suntheanine L-Theanine 150 mg
Product 100 Brand 61
Natural Factors Valerian Root
Natural Factors Valerian Root
Product 100 Brand 100
TerraVita Valerian Root 450 mg
TerraVita Valerian Root 450 mg
Product 100 Brand 70
TerraVita Extra Strength Valerian Root 450 mg 4:1 Extract
TerraVita Extra Strength Valerian Root 450 mg 4:1 Extract
Product 100 Brand 70
Vital Nutrients L-Theanine 200 mg
Vital Nutrients L-Theanine 200 mg
Product 100 Brand 94
Puritan's Pride L-Theanine 200 mg
Puritan's Pride L-Theanine 200 mg
Product 100 Brand 89
Double Wood Supplements L-Theanine 200 mg
Double Wood Supplements L-Theanine 200 mg
Product 100 Brand 95
21st Century Valerian Extract
21st Century Valerian Extract
Product 100 Brand 85
Nutricost L-Theanine 200 mg
Nutricost L-Theanine 200 mg
Product 100 Brand 100
Puritan's Pride Valerian Root Extract
Puritan's Pride Valerian Root Extract
Product 100 Brand 89
Nutricost L-Theanine 200 mg Unflavored
Nutricost L-Theanine 200 mg Unflavored
Product 100 Brand 100
Integrative Therapeutics L-Theanine
Integrative Therapeutics L-Theanine
Product 100 Brand 100
Source Naturals L-Theanine 200 mg
Source Naturals L-Theanine 200 mg
Product 100 Brand 75
Healthy Origins L-Theanine 100 mg
Healthy Origins L-Theanine 100 mg
Product 100 Brand 74
Puritan's Pride L-Theanine 200 mg
Puritan's Pride L-Theanine 200 mg
Product 100 Brand 89
tnvitamins L-Theanine 200 mg
tnvitamins L-Theanine 200 mg
Product 100 Brand 77
Source Naturals L-Theanine 200 mg
Source Naturals L-Theanine 200 mg
Product 100 Brand 75
Seeking Health L-Theanine 100 mg
Seeking Health L-Theanine 100 mg
Product 100 Brand 84
The Vitamin Shoppe L-Theanine 100 mg
The Vitamin Shoppe L-Theanine 100 mg
Product 100 Brand 83
Organika L-Theanine 225mg Capsules
Organika L-Theanine 225mg Capsules
Product 100 Brand 63
Organika L-Theanine 225mg
Organika L-Theanine 225mg
Product 100 Brand 63
Nature's Way Valerian Root Sleep Aid
Nature's Way Valerian Root Sleep Aid
Product 100 Brand 100
Solaray Valerian, 470 mg
Solaray Valerian, 470 mg
Product 100 Brand 99
TerraVita Valerian Extract, 450 mg
TerraVita Valerian Extract, 450 mg
Product 100 Brand 70
Best Naturals L-Theanine, 200 mg
Best Naturals L-Theanine, 200 mg
Product 100 Brand 74
Legion Peak Caffeine + L-Theanine
Legion Peak Caffeine + L-Theanine
Product 100 Brand 92
Complete Natural Products L-Theanine Capsules
Complete Natural Products L-Theanine Capsules
Product 100 Brand N/A
Best Naturals L-Theanine 200 mg
Best Naturals L-Theanine 200 mg
Product 100 Brand 74
Frequently Asked Questions
What is the best sleep & relaxation supplement?

Based on GoodSupp's independent quality analysis of 3109 sleep & relaxation supplements, the top-rated products are: California Gold Nutrition L-Theanine Featuring AlphaWave 100 mg (score: 100/100); Nutricost L-Theanine, 200 mg (score: 100/100); California Gold Nutrition L-Theanine 100 mg (score: 100/100). These rankings are based on ingredient quality, dosage adequacy, bioavailability of ingredient forms, label transparency, inactive ingredient safety, and brand trust scores. Rankings are updated regularly as new products are analyzed and existing formulations change.

How do I choose a good sleep & relaxation supplement?

When choosing a sleep & relaxation supplement, look for these quality indicators: Third-party testing — certifications from NSF, USP, or Informed Sport verify that the product contains what it claims. Bioavailable forms — the specific form of each ingredient affects how well your body absorbs it. Transparent labeling — every ingredient and its exact dose should be clearly listed, not hidden in a proprietary blend. Clean inactive ingredients — check that fillers, binders, and additives are rated safe. Adequate dosing — some products include ingredients at doses too low to be effective. GoodSupp's product scanner evaluates all of these factors automatically and provides a single quality score to make comparison straightforward.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.