L-Tryptophan

Suggested Use

Suggested Use: 1 capsule three times daily; between meals and preferably with fruit juice. To support restful sleep; take 3 capsules before bed.

• 

  Horbaach L Tryptophan 1500mg 180 Capsules

  Target4.8(30)

  $21.49
• 

  Brieofood L- Tryptophan 1000mg per Serving 240 Capsules

  Target

  $18.99
• 

  Nutricost L- Tryptophan Capsules

  Walmart - eSupplements, llc4.6(1600)

  $12.76
• 

  The Vegan Shoppe L- Tryptophan 500mg 120 Veggie Capsules

  The Vitamin Shoppe4.7(50)

  $36.99
• 

  Best Naturals L-Tryptophan mg 60

  Target4.7(74)

  $9.99
• 

  L-Tryptophan Source Naturals

  Life Extension4.7(496)

  $16.88
• 

  Now L-Tryptophan

  vitamin360.com4.6(4600)

  $14.95
• 

  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.

• Pure Nutrition

  4.3 (16)

  Vitamin & supplements store

  8735 Trautwein Rd suite A, Riverside, CA 92508

  Directions(951) 776-8114

• The Vitamin Shoppe

  4.4 (98)

  Vitamin & supplements store

  2692 Canyon Springs Pkwy # A, Riverside, CA 92507

  Directions(951) 653-3270

• Nutrishop Moreno Valley

  4.8 (70)

  Vitamin & supplements store

  12950 Day St STE 103, Moreno Valley, CA 92553

  Directions(951) 213-2164

• Mother Earth Nutrition

  4.7 (25)

  Grocery store

  308 S D St, Perris, CA 92570

  Directions(951) 940-5222

• Wholesale Nutrition Center

  5.0 (95)

  Vitamin & supplements store

  3427 Arlington Ave, Riverside, CA 92506

  Directions(951) 289-9033

• Pure Nutrition

  4.9 (86)

  Vitamin & supplements store

  9496 Magnolia Ave Ste 102, Riverside, CA 92503

  Directions(951) 729-5724

• GNC

  3.9 (37)

  Vitamin & supplements store

  1688 N Perris Blvd Spc D-3, Perris, CA 92571

  Directions(951) 940-1970

• The Vitamin Shoppe

  4.6 (119)

  Vitamin & supplements store

  30120 Haun Rd, Menifee, CA 92584

  Directions(951) 672-4097

• The therapeutic potential of diet on immune-related diseases: based on the regulation on tryptophan metabolism

  J Lin, D Sun-Waterhouse, C Cui - … in Food Science and Nutrition, 2022 - Taylor & Francis

  … Directly supplement of TRP As an essential amino acid, TRP supplement was necessary for human health. Because of the potential toxicity, the administration of pure TRP is limited, …

  202255 citations

• Optimizing nutrition for exercise and sport

  B Leutholtz, RB Kreider - Nutritional Health: Strategies for Disease …, 2001 - Springer

  … Although an initial study suggested that L-tryptophan supplementation improved endurance exercise performance while exercising at 80% of maximal exercise capacity (34 …

  200133 citations

• Role of tryptophan in health and disease: Systematic review of the anti-oxidant, anti-inflammation, and nutritional aspects of tryptophan and its metabolites

  RB Singh - World Heart Journal, 2019 - search.proquest.com

  … L-Tryptophan is an essential amino acid that is needed for the synthesis of proteins and several important bioactive molecules such as serotonin, melatonin, kynurenine and niacin. It …

  201958 citations

• Three Major Deficiency Diseases Harming Mankind (Protein, Retinoid, Iron) Operate Under Tryptophan Dependency

  Y Ingenbleek - Nutrients, 2025 - mdpi.com

  … dietary W deficiency should be recognized as a nutritional hot spot of major public health problems harming mankind. Our review collects the main nutritional and endocrine effects of W …

  20251 citations

• very important information about 5htp!

  J South - mothering.com

  Last month, a" WARNING ABOUT 5-HYDROXYTRYPTOPHAN" was mailed to many members of the life extension/nutritional supplementation community. This" Warning" alleges that …

• 5-HTP, Prozac's true alternative

  MA SOUTH - qisupplements.com

  … of brain serotonin than L-Tryptophan. Furthermore, when 5-… by the brain, without medical supervision prudence suggests … Therefore L-Tryptophan and especially 5-HTP, should only …

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-04-23. DSLD Label ID: 219030. 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.