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    Vitacost L-Theanine

    $10.99

    $0.19 per serving

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    Vitacost-Synergy L-Theanine from Suntheanine®

    $16.99

    $0.15 per serving

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    NOW L-Theanine Double Strength

    $23.89

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    Vitacost-Synergy L-Theanine from Suntheanine®

    $9.99

    $0.17 per serving

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    Natural Vitality Calm Sleep Magnesium Melatonin L-Theanine Blueberry Pomegranate

    $13.59

    $0.46 per serving

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    Nutricost L-Theanine

    $11.95

    $0.10 per serving

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    Bucklebury Magnesium Glycinate with L-Theanine

    $22.19

    $0.74 per serving

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    Nature Made Wellblends Sleep Longer Melatonin (10mg) L Theanine GABA

    $13.99

    $0.40 per serving

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    Natural Vitality Calm Sleep Magnesium Melatonin L-Theanine GABA

    $21.19

    $0.36 per serving

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    NOW L-Theanine Double Strength

    $14.69

    $0.25 per serving

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    Jarrow Formulas Theanine 200

    $20.99

    $0.35 per serving

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    Doctor's Best L-Theanine with Suntheanine

    $21.79

    $0.25 per serving

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    Simple Truth L-Theanine

    $11.99

    $0.20 per serving

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    • Professional Supplements
    Integrative Therapeutics Cortisol Manager

    $68.99

    $1.54 per serving

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    NOW L-Theanine

    $12.39

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    Natural Vitality Calm Kids Magnesium Sweet Citrus

    $22.89

    $0.20 per serving

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    Nature Made L-Theanine Chewable Tropical Fruit

    $12.89

    $0.26 per serving

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    Natural Factors Stress-Relax Suntheanine L-Theanine

    $35.67

    $0.60 per serving

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    Jarrow Formulas Theanine 100

    $11.99

    $0.20 per serving

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    MaryRuth's L-Theanine Drops From AlphaWave - For Sleep Support Cognitive Function Stress Management Lemon Lime

    $21.95

    $0.74 per serving

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    Life Extension L-Theanine

    $18.00

    $0.30 per serving

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    NOW Chewable L-Theanine

    $13.29

    $0.15 per serving

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    Source Naturals Theanine Serene

    $21.69

    $0.37 per serving

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    Natural Vitality Calm Sleep Magnesium Melatonin L-Theanine GABA

    $12.29

    $0.41 per serving

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    Nutricost L-Theanine

    $20.19

    $0.09 per serving

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    • Professional Supplements
    Double Wood Supplements L-Theanine

    $19.95

    $0.17 per serving

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    Sports Research L-Theanine Suntheanine Double Strength

    $20.97

    $0.35 per serving

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    Natural Factors Stress-Relax® Suntheanine® L-Theanine

    $18.87

    $0.63 per serving

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    Nature's Way L-Theanine

    $44.19

    $0.50 per serving

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    Nature's Way Kids Cool Calm & Collected - Magnesium & L-Theanine Grape Flavored

    $12.29

    $0.31 per serving

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    Natural Vitality Calm Kids Magnesium Sweet Citrus

    $13.69

    $0.23 per serving

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    Natrol Sleep + Calm Gummy Strawberry

    $15.64

    $0.53 per serving

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    Evlution Nutrition L-Theanine

    $14.99

    $0.25 per serving

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    • Buy one get one FREE
    Good Day Chocolate Adults Calm Supplement

    $25.99

    $1.30 per serving

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    Life Extension Theanine XR™ Stress Relief

    $21.00

    $0.70 per serving

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    Natural Vitality Calm Mind Powder Unflavored

    $18.29

    $0.33 per serving

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    NOW L-Theanine Pure Powder

    $20.39

    $0.22 per serving

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    Natural Vitality Calm Mind Powder Honey Chamomile

    $18.29

    $0.17 per serving

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    • Professional Supplements
    Codeage Multi Collagen Protein + Magnesium Glycinate

    $39.99

    $1.34 per serving

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    Solaray L-Theanine

    $48.99

    $0.55 per serving

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    Natural Vitality Calm Kids Sleep Gummies Nighttime Berry

    $13.29

    $0.23 per serving

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    Olly Sleep Blackberry Zen

    $17.09

    $0.49 per serving

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    NaturesPlus Pro L-Theanine

    $8.37

    $0.14 per serving

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    KAL L-Theanine Pineapple Dream

    $10.89

    $0.10 per serving

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    Nature Made Wellblends Sleep & Recover Sleep Aid Melatonin L Theanine Magnesium

    $14.29

    $0.65 per serving

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    Natural Factors Stress-Relax® Suntheanine® L-Theanine

    $18.87

    $0.63 per serving

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    • Professional Supplements
    Thorne Theanine

    $64.00

    $0.72 per serving

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    Bluebonnet Nutrition L-Theanine

    $18.80

    $0.32 per serving

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    Solaray L-Theanine Chewable Lemon Lime

    $20.69

    $0.69 per serving

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    Source Naturals L-Theanine Caps

    $24.85

    $0.42 per serving

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    Superior Source L-Theanine

    $19.50

    $0.39 per serving

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    Nature's Way L-Theanine

    $14.99

    $0.50 per serving

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    Nature's Way Sambucus Sleep + Immune Elderberry Gummies with Melatonin & Vitamin C & Zinc

    $16.59

    $0.67 per serving

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    Nutricost Caffeine + L-Theanine

    $13.95

    $0.06 per serving

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    Best Naturals L-Theanine

    $7.99

    $0.07 per serving

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    Olly Goodbye Stress®

    $18.99

    $0.64 per serving

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    Kal GABA L-Thenine Stress B Lozenge Natural Mango Tangerine

    $13.19

    $0.27 per serving

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    Solgar L-Theanine Free Form

    $24.29

    $0.41 per serving

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    Olly Extra Strength Sleep Blackberry Zen

    $18.99

    $0.55 per serving

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    Amazing Nutrition Melatonin Plus L-Theanine

    $10.19

    $0.09 per serving

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