L-Tryptophan

Suggested Use

Recommendations: As a dietary supplement; take 2 capsules; 1-3 times daily; between meals.

• 

  L-Tryptophan Pure Encapsulations

  Pure For You4.6(40)

  $72.50
• 

  Pure Encapsulations - L-Tryptophan

  EarthTurns.com4.6(40)

  $65.10
• 

  Pure Encapsulations l-Tryptophan

  Town & Country Compounding4.6(40)

  $72.50
• 

  L-Tryptophan by Pure Encapsulations

  Cincinnati Health Institute4.6(40)

  $72.50
• 

  L-Tryptophan (Pure Encapsulations) 180 Capsules

  boulevardcompounding.com4.6(40)

  $124.50
• 

  Best Rest Formula Pure Encapsulations

  Pure Prescriptions4.3(162)

  $37.00
• 

  Pure Encapsulations Pure Sleep 60 Capsules

  Target3.3(3)

  $52.00
• 

  L-tryptophan Supplement Nighttime Formula

  Walmart - VitaPulse5.0(1)

  $17.95

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

  4.5 (63)

  Vitamin & supplements store

  1063 Montauk Hwy, West Babylon, NY 11704

  Directions(631) 587-1273

• Vitamin Factory Outlet

  4.6 (34)

  Vitamin & supplements store

  75 Bi County Blvd, Farmingdale, NY 11735

  Directions(631) 542-5650

• GNC

  4.9 (23)

  Vitamin & supplements store

  805 Broadway Ste 101, Amityville, NY 11701

  Directions(631) 320-2502

• Classic Sports Nutrition

  4.9 (10)

  Vitamin & supplements store

  78 Merrick Rd, Amityville, NY 11701

  Directions(516) 665-0882

• Herbalife Nutrición Copiague Center

  5.0 (17)

  Vitamin & supplements store

  140 25th St, Copiague, NY 11726

  Directions(631) 432-2772

• Eva's Health Supplements & Daily Essentials

  5.0 (757)

  Vitamin & supplements store

  3350 Park Ave, Wantagh, NY 11793

  Directions(347) 653-9837

• King Davids Supplements

  5.0 (8)

  Vitamin & supplements store

  192 Merritts Rd, Farmingdale, NY 11735

  Directions(914) 933-7594

• Herbalife club the shack

  Vitamin & supplements store

  1800 Great Neck Rd, Copiague, NY 11726

  Directions(631) 896-5451

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

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

  … health considerations of different population groups. It is vital to carefully balance the benefits of tryptophan supplementation … is essential to maximize the health benefits of tryptophan …

  2025

• 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 …

  202413 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

• 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 2023-06-22. DSLD Label ID: 294000. 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.