5-Hydroxy-Tryptophan (100 mg)®
Botanicals & HerbsBrand: Priority One Nutritional Supplements
Functions
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.
Single-ingredient formula listed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
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
| Ingredient | Amount Per Serving | |
|---|---|---|
| Griffonia simplicifolia(L-5-Hydroxytryptophan) | 100 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
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
Priority One Complete One Daily 90 Capsules
Priority One Vitamins5.0(1)$66.00Priority Lipo Priority One 120 Capsules
OVitaminPro.com5.0(1)$60.00Priority One Anxiety Balance 90 Capsules
Priority One Vitamins4.7(30)$93.50Priority One Mega Stress Caps 150 Capsules
Priority One Vitamins5.0(3)$66.00Priority One Mega Stress 120 Tablets
Priority One Vitamins4.6(9)$63.80Priority One Adrenal Support 90 Vegetarian Capsules
eBay - purplemonkeymarket5.0(1)$23.99Progressive Labs 5-Hydroxy L- Tryptophan 30 Capsules
drguberman.com5.0(2)$23.00Priority 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 …
2026Role 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 citations5-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 citationsTryptophan 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.



