Theanine Serene®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 2 Tablet(s) · 1 per day

Percent Daily Values (% DV) are based on a 2,000 calorie diet.

• 

  Serene Science Theanine Serene 60 Tablets

  Vitacost.com4.8(477)

  $12.25
• 

  Serene Science Theanine Serene Tablets

  Swanson Health Products4.7(831)

  $26.59
• 

  Source Natural, Theanine Serene, 120 table

  Down to Earth Organic & Natural

  $16.99
• 

  Source Naturals L Theanine

  Source Naturals4.7(683)

  $18.98
• 

  Serene Science Optimistic Saffron Complex 30 Tablets

  Source Naturals4.3(3)

  $26.50
• 

  GABA Source Naturals

  Swanson Health Products4.6(616)

  $22.05
• 

  Serene

  recreahealth.com5.0(1)

  $43.00
• 

  Source Naturals L-Theanine 200 mg

  Herbs Direct4.8(36)

  $25.55

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.

• Body Hero

  5.0 (493)

  Sports Nutrition Shop

  1292 Greenford Rd, Greenford UB6 0HH

  Directions07502 448088

• Fitandfat

  5.0 (321)

  Vitamin & Supplements Shop

  Inside the post office, 187 Uxbridge Rd, London W13 9AJ

  Directions020 8050 1277

• Vitamin Shop HOUNSLOW

  5.0 (265)

  Vitamin & Supplements Shop

  102 High St, Hounslow TW3 1NH

  Directions020 8616 4040

• Liberty Supplements

  4.5 (59)

  Sports Nutrition Shop

  344 High Rd, Wembley HA9 6AZ

  Directions020 3730 7317

• Liberty Supplements Warehouse

  4.5 (29)

  Sports Nutrition Shop

  Unit 4B, Liberty Supplements Warehouse, 158 Dukes Rd, London W3 0SL

  Directions020 8062 0480

• Vitamin Shop ACTON

  4.8 (76)

  Vitamin & Supplements Shop

  263 The Vale, London W3 7QA

  Directions020 8743 1907

• Planetis Natural Health & Nutrition

  5.0 (38)

  Vitamin & Supplements Shop

  32 Clifton Rd, London W9 1ST

  Directions020 7289 4551

• London Supplements

  3.7 (84)

  Vitamin & Supplements Shop

  13, Waverley Industrial Park Waverley Industrial Estate, Hailsham Dr, Harrow HA1 4TR

  Directions020 8863 0300

• 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: A potential multifaceted natural bioactive amide as health supplement

  R Adhikary, V Mandal - Asian Pacific Journal of Tropical Biomedicine, 2017 - Elsevier

  … , growth supplements or some other therapeutics. l-theanine is such a bioactive amide amino acid presented in different plants and fungi, especially in tea. Theanine has influential …

  201778 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. …

  202526 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 …

  2017250 citations

• Green tea and theanine: health benefits

  R Cooper - International journal of food sciences and nutrition, 2012 - Taylor & Francis

  … may be higher in theanine. Three to four cups of green tea are expected to contain between 60 and 160 mg of theanine (Figure 2) Theanine is sold as a dietary supplement and has …

  2012134 citations

• Herbal and natural supplements for improving sleep: a literature review

  JW Yeom, CH Cho - Psychiatry Investigation, 2024 - pmc.ncbi.nlm.nih.gov

  … supplement, individuals should consult their healthcare providers before using theanine products, particularly if they have underlying health … medications that may interact with theanine. …

  202462 citations

• Magnesium Forms Explained: Oxide, Citrate, and Glycinate

  The magnesium form on a label affects how much elemental magnesium you get. Here is how the common forms compare.

  VitaSuppTrack Editorial· Jun 24, 2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2017-08-22. DSLD Label ID: 77865. 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.