L-Tryptophan 500 mg

Amino Acids & Protein

Brand: Jarrow Formulas

CapsuleOff Market
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Net Contents

60 Veggie Cap(s)

Serving Size

1 Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 90011 15056 5

Product Version

Not specified

Suggested Use

Usage: Take 1 capsule on an empty stomach 30 minutes before sleep with water or fruit juice or as directed by your qualified healthcare professional.

Market Reference

$9.99 – $72.50· 15 listings
  • Jarrow Formulas L- Tryptophan 500mg 60 Capsules

    Instacart4.5(8)
    $16.79
  • Life Extension L- Tryptophan 500 mg 90 Capsules

    Walmart - Life Extension Buyers Club4.7(496)
    $21.03
  • L-Tryptophan Source Naturals

    Life Extension4.7(496)
    $16.88
  • L-Tryptophan 500 mg

    Curated Wellness4.6(1100)
    $18.25
  • L-Tryptophan 500 mg 365 Vegan Capsules

    Fusion Specialty Pharmacy4.6(16)
    $52.98
  • L- Tryptophan 500 mg Quick Release Capsules

    Walmart - PIPING ROCK HEALTH PRODUCTS, LLC4.6(7)
    $9.99Lowest
  • L-Tryptophan 500mg

    Curated Wellness4.7(46)
    $40.00
  • L-Tryptophan

    Pure Prescriptions
    $43.99

Where to Buy Locally

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

    4.4 (66)

    Vitamin & supplements store

    1927 Old Gallows Rd, Vienna, VA 22182

  • GNC

    4.1 (40)

    Vitamin & supplements store

    1961 Chain Bridge Rd Space 7913, McLean, VA 22102

  • PJ International Wellness and Beauty - (Amway Products Distributor)

    5.0 (9)

    Vitamin & supplements store

    11808 Green Look Pl, Fairfax, VA 22033

  • Vasonoxol®

    4.9 (52)

    Vitamin & supplements store

    206 N Washington St #100, Alexandria, VA 22314

  • The Vitamin Shoppe

    4.4 (175)

    Vitamin & supplements store

    5524 Leesburg Pike Service Rd, Falls Church, VA 22041

  • GNC

    4.3 (48)

    Vitamin & supplements store

    1100 S Hayes St, Arlington, VA 22202

  • The Vitamin Shoppe

    4.4 (117)

    Vitamin & supplements store

    6701-A Loisdale Rd Suite #6695, Springfield, VA 22150

  • GNC

    3.6 (50)

    Vitamin & supplements store

    3523 S Jefferson St, Bailey's Crossroads, VA 22041

Research & Studies

  • Tryptophan As A Nutraceutical–Clinical And A Critical

    MR Suchitra, P Krubaa, S Parthasarathy - European Journal of Molecular & … - academia.edu

    … L Tryptophan is available in the commercial product as 125 mg/ capsule or 500 mg/ capsule … was lowered in preeclamptic compared with the healthy placental arteries, consistent with …

  • Successful discontinuation of chronic polypsychotropic regimen and resolution of withdrawal syndrome through nutrition and lifestyle interventions: A case …

    K Brogan, A Siefert - Adv Mind Body Med, 2019 - kajabi-storefronts-production.s3 …

    … The patient took 500-1500 mg nightly of L-tryptophan for SNRI withdrawal support (Pure … a medical disability leave. She received 0.5 mg Klonopin and restarted Lamictal at 25 mg. …

    20193 citations
  • THE MOOD CURE

    TOT CHARGE - tantor-site-assets.s3.amazonaws …

    … if it would be appropriate for you to take 5-HTP, L-tryptophan, L-tyrosine, D-phenylalanine or L-… supplements used at my clinic: 800-7339293 or consult an experienced alternative health …

  • Analysis, nutrition, and health benefits of tryptophan

    M Friedman - International Journal of Tryptophan Research, 2018 - journals.sagepub.com

    … Here, tryptophan refers to l-tryptophan and the isomeric form produced during food … in the absence of l-tryptophan; ie, the mice must meet the entire need for l-tryptophan from the d-…

    2018398 citations
  • … tryptophan-to-large-neutral-amino-acids ratio attenuates the effects of L-tryptophan on gut hormones and energy intake in healthy males: a randomized, cross …

    J Anjom-Shoae, M Hajishafiee, PCE Fitzgerald… - The American journal of …, 2025 - Elsevier

    Background L-tryptophan (“Trp”) and L-leucine (“Leu”), when administered intraduodenally, increase plasma cholecystokinin (CCK) and glucagon-like peptide 1 (GLP-1) and stimulate …

    20253 citations
  • Health benefits of tryptophan in children and adults

    BN Nayak, HS Buttar - J. Pharm. Sci. Technol. Manage, 2015 - pharmacy.nmims.edu

    … This mini-review provides a brief overview of the role of L-tryptophan in the synthesis of serotonin, quinolinic acid, and kynurenic acid, which are critically important for neuronal …

    201512 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-06-24. DSLD Label ID: 202349. 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.