Brand: Hard Rhino

PowderOn Market
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Net Contents

5 kg; 11 lbs

Serving Size

0.2 Gram(s) [1 scoop]

Servings Per Container

Not specified

Supplement Form

Powder

Bar Code (UPC/SKU)

7 98711 50028 4

Product Version

Not specified

Suggested Use

Suggested Use: As a dietary supplement; take 1 leveled scoop (~200mg) with 6-8 ounces of water or suitable beverage. Taken 1-2 times daily; preferably on an empty stomach or as directed by a qualified health professional. A micro scale is recommended for accurate measuring.

Market Reference

$6.43 – $1926.00· 40 listings
  • Spring Valley L-Theanine Capsules 100 mg 100 Count

    Walmart4.4(296)
    $6.43Lowest
  • Double Wood Supplements L-Theanine

    Double Wood Supplements4.8(111)
    $19.95
  • Nature Made Chewable L Theanine Tablets

    Target4.4(59)
    $15.79
  • Sports Research L-Theanine Suntheanine Softgels

    Sports Research4.7(1000)
    $38.95
  • MaryRuth's L-Theanine Liquid Drops

    Walmart - MaryRuths4.8(223)
    $15.37
  • Nootropics Depot L-Theanine Capsules

    Nootropics Depot4.5(15)
    $44.99
  • Ryno Power Motivation Capsules Single Serving

    Dennis Kirk4.4(41)
    $28.95
  • Now Foods L-Theanine 60 Capsules

    Wonder Laboratories4.7(7600)
    $12.56

Where to Buy Locally

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Research & Studies

  • Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials

    J Cotter, CE Caddick, JL Harper… - Nutritional …, 2026 - Taylor & Francis

    … Though many of the included studies were conducted using healthy adults in Japan, beneficial effects of L-theanine on sleep related-measures were also reported in randomised, …

    20269 citations
  • Stacker 2 Sleep Chew Gummies 20mg Melatonin In Stock

    T Ten Energy, FT Ten Ephedra, T Ten Pre-Workout… - racerephedra.com

    … the night, these issues can have a significant impact on our health and well-being. One of the most … Another key ingredient is L-theanine, an amino acid found in green tea that promotes …

  • A Year of Compassion: 52 Weeks of Living Zero-Waste, Plant-Based, and Cruelty-Free

    C Patrick-Goudreau - 2025 - books.google.com

    … Please consult with your physician or healthcare specialist regarding how the … improve your health, heal our Earth, and prevent violence against animals, the environmental benefits of …

    2025
  • Dietary Suspects: Extracting the Truth from Dietary Supplements with a Standardized Federal Testing Seal.

    NA Traver - Arizona State Law Journal, 2023 - arizonastatelawjournal.org

    … Although there are legitimate medical uses of dietary supplements,11 … ,151 L-theanine for ADHD,152 or curcumin (turmeric) extracts for depression,153 they do not intend to supplement …

    20235 citations
  • Edge Pump Psycho Pharma Night Time Pre-Workout In Stock

    T Ten Energy, FT Ten Ephedra - racerephedra.com

    … Elevate your cognitive abilities to new heights with Alpha GPC, Lion's Mane, and L-Theanine. … medical advice. Always consult with a healthcare professional before starting any dietary …

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2017-04-25. DSLD Label ID: 72083. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.