L-Tryptophan®

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 Capsule(s) · 1–3 per day

Not Present

• 

  L-Tryptophan Pure Encapsulations

  Target4.6(42)

  $72.50
• 

  Best Rest Formula Pure Encapsulations

  Pure Prescriptions4.3(167)

  $37.00
• 

  L-Tryptophan (Pure Encapsulations) 180 Capsules

  boulevardcompounding.com4.6(42)

  $124.50
• 

  Pure MotilPro Digestive Support 90 Capsules

  Walmart - Pattern4.1(275)

  $66.00
• 

  Pure Encapsulations SeroPlus 120 Capsules

  Supplement First4.1(19)

  $58.00
• 

  5-HTP mg Pure Encapsulations

  PureFormulas.com4.8(83)

  $61.00
• 

  Pure Encapsulations Pure Sleep 60 Capsules

  Professional Supplement Center

  $52.99
• 

  L- Tryptophan

  SFI Health

  $43.99

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.

• ITL Health

  5.0 (37)

  Vitamin & Supplements Shop

  50 Broadway, London SW1H 0BL

  Directions0118 321 7628

• Prodentim

  5.0 (1)

  Vitamin & Supplements Shop

  72 Regent St., London W1B 4EN

  Directions028 6745 7567

• Nutriburst

  4.6 (30)

  Manufacturer

  8 Waterloo Pl, London SW1Y 4BN

  Directions020 3943 8201

• Aphro-D

  4.9 (82)

  Vitamin & Supplements Shop

  27 Old Gloucester St, London WC1N 3AF

  Directions+1 224-241-7531

• Protiv Nutrition

  5.0 (1)

  Vitamin & Supplements Shop

  3rd Floor, 207 Regent St., London W1B 3HH

  Directions07442 915758

• Nutrapad Ltd –Pharmacy-friendly, Hydration, Immunity & Wellness Support - oxford street

  5.0 (4)

  Vitamin & Supplements Shop

  41 Bloomsbury Way, London WC1A 2SA

  Directions07904 096549

• Arbor Vitamins

  5.0 (13)

  Vitamin & Supplements Shop

  128 City Rd, London EC1V 2NX

  Directions

• Vitopia

  4.9 (57)

  Vitamin & Supplements Shop

  18 Wimpole St, London W1G 8GD

  Directions020 7164 6368

• Fabrication of Ethyl Cellulose and Hydroxypropyl Cellulose Composite Microcapsules via Solid-Oil-Oil Emulsion for Encapsulation of l-Tryptophan

  B Pomon, A Madler, X Jiang… - Food and Bioprocess …, 2025 - Springer

  … l-Tryptophan (Trp) is an important amino acid in the human diet: It is responsible for the healthy … We created an encapsulation platform to mask Trp’s unpalatable flavor. High loading …

  20251 citations

• … coupled to mass spectrometry in quality assessment of dietary supplements—A case study of tryptophan supplements: release assay, targeted and …

  KA Stępień, J Giebułtowicz - Pharmaceuticals, 2022 - mdpi.com

  … Trp has a positive effect on mood, cognitive functions [30], sleep [31], and a decrease or maintenance of a healthy weight [32]. Response to supplementation is individual and may be …

  20229 citations

• Fabrication and characterization of whey protein isolate-tryptophan nanoparticles by pH-shifting combined with heat treatment

  L Yang, H Dong, J Wang, Y Dadmohammadi… - Food Research …, 2024 - Elsevier

  … L-Tryptophan (Trp) is an essential amino acid with numerous health benefits. However, incorporating Trp into food products is limited due to its pronounced bitter taste. Encapsulating …

  202416 citations

• Development of tryptophan-modified chitosan-based nanorelease system: Universal encapsulation and targeted delivery of hydrophilic and hydrophobic bioactive …

  Z Wang, Z Yang, X Wang, L Xing, J Chen… - Food and Bioproducts …, 2025 - Elsevier

  This study successfully constructed an amphiphilic universal nanodelivery system (Trp-CS-PC) by modifying chitosan (CS) with hydrophobic L-Trp and dynamically self-assembling it …

  20251 citations

• Tryptophan Stability and Palatability in the Food Formulation: A Review

  S Allahmadadi, A Homayouni-Rad… - Current …, 2025 - benthamdirect.com

  … to the specific dietary needs and health considerations of different population groups. It is vital … Supplementing healthy women with up to 5.0 g/d of Ltryptophan has no adverse effects. J. …

  2025

• A systematic review of the effect of L-tryptophan supplementation on mood and emotional functioning

  AM Kikuchi, A Tanabe, Y Iwahori - Journal of dietary supplements, 2021 - Taylor & Francis

  … This systematic review includes 11 RCTs that examined the effects of TRP intake on positive and negative mood in healthy adult populations. We have targeted healthy adult men and …

  2021109 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2023-07-18. DSLD Label ID: 295523. 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.