Theanine Serene

Suggested Use

Suggested Use: 2 tablets daily.

• 

  Source Naturals Serene Science Theanine Serene 120 Tablets

  Vitacost.com4.8(456)

  $22.39
• 

  Serene Science Theanine Serene Tablets

  iHerb4.7(719)

  $25.89
• 

  Serene Science Optimistic Saffron Complex 30 Tablets

  Herbs Direct4.0(2)

  $9.79
• 

  Source Naturals L-Theanine 200 mg 60 Capsules

  Walmart - Better Health International4.7(231)

  $32.99
• 

  Serene Science Theanine Serene with Magnesium

  Covenant Health Products4.8(456)

  $9.99
• 

  GABA Source Naturals

  Swanson Health Products4.6(621)

  $12.59
• 

  Source Naturals Caffeine + L Theanine

  PureFormulas.com4.8(20)

  $32.89
• 

  Source Naturals L-Theanine Powder

  Instacart

  $14.99

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• The Vitamin Shoppe

  4.2 (87)

  Vitamin & supplements store

  103 Elm St, Enfield, CT 06082

  Directions(860) 253-9082

• Ravenswood Natural Health

  3.9 (41)

  Vitamin & supplements store

  1606 Hopmeadow St, Simsbury, CT 06070

  Directions(860) 264-1587

• Supplife Wethersfield

  4.9 (59)

  Vitamin & supplements store

  1289 Silas Deane Hwy, Wethersfield, CT 06109

  Directions(860) 500-7613

• GNC

  3.8 (30)

  Vitamin & supplements store

  194 Buckland Hills Dr, Manchester, CT 06042

  Directions(860) 644-4835

• The Vitamin Shoppe

  4.5 (109)

  Vitamin & supplements store

  105 Buckland Hills Dr, Manchester, CT 06042

  Directions(860) 644-2834

• GNC

  4.1 (50)

  Vitamin & supplements store

  935 Riverdale St SPACE F-109, West Springfield, MA 01089

  Directions(413) 747-5392

• The Vitamin Shoppe

  4.3 (93)

  Vitamin & supplements store

  1600 SE Rd, Farmington, CT 06032

  Directions(860) 674-9057

• GNC

  4.3 (55)

  Vitamin & supplements store

  500 W Farms Mall Spc 113, Farmington, CT 06032

  Directions(860) 561-5328

• Subjective assessment of the effects of an herbal supplement containing lavender essential oil on sleep quality: A randomized, double-blind, placebo-controlled …

  N Stevens, J Dorsett, A DaBell, DL Eggett, X Han… - Cogent …, 2017 - Taylor & Francis

  … oral supplement (dōTERRA Serenity™ Restful Complex Softgels) containing lavender essential oil, L-theanine, … Our objective was to assess how Serenity affects sleep quality in healthy …

  201716 citations

• l-theanine: From tea leaf to trending supplement–does the science match the hype for brain health and relaxation?

  R Dashwood, F Visioli - Nutrition Research, 2025 - Elsevier

  … of this nutraceutical supplement marketed for brain health and … the use of l-theanine supplements at pharmacologic doses by … this trending supplement for brain health and relaxation. …

  202525 citations

• L-theanine, unique amino acid of tea, and its metabolism, health effects, and safety

  D Türközü, N Şanlier - Critical reviews in food science and nutrition, 2017 - Taylor & Francis

  … health effects. Although the catechins and caffeine are the primary bioactive components that are related with the health effects of the tea, the health effects of theanine … that the theanine …

  2017245 citations

• L-theanine| Matcha Green Tea Powder's Super Amino Acid

  E Hadjipateras - matcha.com

  … health benefits of supplementing L-theanine on his podcast — he also lists it on his official supplement … what he failed to mention is how matcha is the best natural source of L-theanine. …

• L-Theanine Nootropic Review: Benefits, Side Effects & Dosage

  HMDLT Cost - nootropicology.com

  … Always consult with a healthcare provider before combining L-Theanine with other … tea for a natural source of L-Theanine, though the content is typically lower than in supplements. …

• " L-Theanine As A Natural Anxiolytic: A Review Of Its Neurophysiological Mechanisms, Clinical Efficacy, And Safety In Anxiety And Stress Management

  M Szczupak, W Modzelewski… - African Journal of …, 2025 - ppm.edu.pl

  … fluency and executive functioning were also observed, indicating L-theanine's broader psychotropic benefits in a healthy population experiencing subclinical stress symptoms [12]. …

  2025

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: 72573. 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.