5-Hydroxy-Tryptophan (100 mg)®

Botanicals & Herbs

Brand: Priority One Nutritional Supplements

CapsuleBotanicalOn Market
Click to view full label

Net Contents

90 Vegetarian Capsule(s)

Serving Size

1 Vegetarian Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

8 15354 02000 6

Product Version

1333-6004R2

Label Analysis

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

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

2Dietary Attributes

Label states: Vegetarian, Non-GMO.

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

Supplement Facts

Serving Size: 1 Vegetarian Capsule(s) · 1 per day

IngredientAmount Per Serving
Griffonia simplicifolia(L-5-Hydroxytryptophan)100 mg

Not Present

Other Ingredients

Rice ChelateVegetarian Capsule

Target Groups

VegetarianAdult (18 - 50 Years)

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Recommendations: Take one (1) capsule daily or as directed by your physician.

Warnings & Precautions

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: If you are pregnant or breast feeding, consult your physician before using this product.

Precautions re: Children

Keep out of reach of children.

Storage

Storage

Keep container tightly closed, store in a cool, dry place.

Formulation

Formulation re: Does NOT Contain

Contains no preservatives. Bisphenol-A (BPA) & Phthalate Free

Formulation re: Vegetarian/Vegan

Vegetarian formulation

Formulation re: Does NOT Contain

Non-GMO

FDA Statements

FDA Statement of Identity

A Dietary Supplement

FDA Disclaimer Statement

This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.

Other Label Statements

Seals/Symbols

GMP Certified

General Statements: All Other Content

Priority One Nutritional Supplements Inc since 1988

General Statements: All Other Content

For professional use only.

Manufacturer & Distributor

Distributor

Priority One Nutritional Supplements, Inc.

Manufacturer

First Priority Manufacturing, Inc.

2681 Delta Ring Road, Ferndale, WA, 98248

Market Reference

$14.99 – $218.30· 40 listings
  • Priority One Complete One Daily 90 Capsules

    Priority One Vitamins5.0(1)
    $66.00
  • Priority Lipo Priority One 120 Capsules

    OVitaminPro.com5.0(1)
    $60.00
  • Priority One Anxiety Balance 90 Capsules

    Priority One Vitamins4.7(30)
    $93.50
  • Priority One Mega Stress Caps 150 Capsules

    Priority One Vitamins5.0(3)
    $66.00
  • Priority One Mega Stress 120 Tablets

    Priority One Vitamins4.6(9)
    $63.80
  • Priority One Adrenal Support 90 Vegetarian Capsules

    eBay - purplemonkeymarket5.0(1)
    $23.99
  • Progressive Labs 5-Hydroxy L- Tryptophan 30 Capsules

    drguberman.com5.0(2)
    $23.00
  • Priority One 5-Hydroxy Gaba 90 Capsules

    OVitaminPro.com5.0(7)
    $44.00

Where to Buy Locally

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Research & Studies

  • Nutritional modulators of sleep: A narrative review of vitamins, minerals, amino acids, and their neurobiological and chronoepigenetic mechanisms

    A Khosropanah, SA Hosseini… - Chronobiology …, 2026 - Taylor & Francis

    … of high priority to research alternative or adjuvant measures that can maintain healthy sleep. … Cofactor with 5-hydroxy tryptophan decarboxylase, the enzyme necessary to produce …

    2026
  • 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

    … 5-hydroxy tryptophan can easily enter brain tissues to produce serotonin. Serotonin is also … The metabolic product of tryptophan 5-hydroxy tryptophan produced in the peripheral tissues …

    201960 citations
  • … management of depressed preadolescents and adolescents: a review of randomized controlled trials on oral supplementations (Omega-3, fish oil, vitamin D3 …

    C Pruneti, S Guidotti - Nutrients, 2023 - mdpi.com

    … In adults, the recommended dosage of this amino acid is 100 mg of 5 hydroxy tryptophan (5-HTP), two–three times per day, for depression. Some supplements also add vitamins and …

    202321 citations
  • 5-HTP

    K Adarsh, B Seller - meonutrition.com

    Take your control back with 5-HTP-naturally derived from Griffonia simplicifolia seeds. This natural serotonin precursor supports positive mood, quality sleep, and appetite control. Each …

  • Tryptophan and biogenic amines in the differentiation and quality of honey

    CV Borges, A Nunes, VE Costa… - International …, 2022 - journals.sagepub.com

    … Conscious consumption and the search for foods with good nutritional quality, aiming at the prevention of diseases, has been a priority in the human diet. In addition, there is also an …

    202216 citations
  • Tryptophan metabolism in glaucomatous optic neuropathy: from metabolic dysregulation to therapeutic opportunities

    N Wang, T Yan, H Sun, W Guo - Journal of Translational Medicine, 2026 - Springer

    … total 5-HT production), where enterochromaffin cells sequentially convert dietary tryptophan to 5-hydroxytryptophan (5-HTP) via tryptophan hydroxylase 1 (TPH1), followed by aromatic L…

    2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2020-09-25. DSLD Label ID: 235578. 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.