Brand: H&B Holland & Barrett

CapsuleOn Market
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Net Contents

120 Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

Not specified

Product Version

Not specified

Suggested Use

Directions: Take 1-2 capsules per day; as needed or before bedtime. 1 a day

Market Reference

$7.99 – $70.83· 13 listings
  • Holland & Barrett 5-HTP Griffonia Seed Extract

    McGrocer4.6(5)
    $38.71
  • Now 5 HTP mg

    NOW4.7(3000)
    $7.99Lowest
  • 5-HTP mg Pure Encapsulations

    Target4.8(21)
    $42.50
  • Jarrow Formulas 5-HTP 100 mg 60 Capsules

    Jarrow Formulas4.7(200)
    $20.99
  • 5-HTP 50 mg 60 capsules

    Life Extension
    $21.99
  • 5-HTP 50mg Sale

    The Natural Apothecary Shoppe4.4(28)
    $26.50
  • Natural Balance 5-HTP 50mg 60 Vegetarian Capsules

    Target4.5(15)
    $23.99
  • Health Concerns Griffonex 5 HTP

    Nutriessential.com5.0(1)
    $35.91

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.

  • Optimal Nutrition & Supplements

    4.3 (66)

    Vitamin & supplements store

    2182 E Kimberly Rd, Davenport, IA 52807

  • The Vitamin Shoppe

    4.2 (61)

    Vitamin & supplements store

    5270 Elmore Avenue Ste 1, Davenport, IA 52807

  • QC Nutrition Specialists (formerly Max Muscle)

    5.0 (40)

    Vitamin & supplements store

    852 Middle Rd Ste 103, Bettendorf, IA 52722

  • GNC

    4.3 (34)

    Vitamin & supplements store

    4028 E 53rd St, Davenport, IA 52807

  • Heritage Natural Foods

    4.7 (99)

    Vitamin & supplements store

    1317 6th Ave, Moline, IL 61265

  • pHat Bottom Labs

    4.8 (19)

    Vitamin & supplements store

    824 15th Ave, East Moline, IL 61244

  • Pure Living Nutritions

    Vitamin & supplements store

    4123 Rodeo Rd, Davenport, IA 52806

  • Nutrition Outlet

    4.7 (20)

    Vitamin & supplements store

    2114 Park Ave, Muscatine, IA 52761

Research & Studies

  • Recent advances in the utilization of tea active ingredients to regulate sleep through neuroendocrine pathway, immune system and intestinal microbiota

    Y Wei, J Xu, S Miao, K Wei, L Peng… - Critical Reviews in …, 2023 - Taylor & Francis

    … of 5-hydroxytryptophan (5-HTP), sleep will return to normal. Both tryptophan and 5-HTP are … 5-HTP first, and then catalyzed by 5-HTP decarboxylase and pyridoxine coenzyme to form …

    202379 citations
  • Tea flavonoids and cardiovascular health

    R Tyrrell - Molecular Aspects of Medicine, 2010 - academia.edu

    … supplements or foods, and herbal medicines prevent disease and promote health. The … HB and Joscyln Wallace through research grants from the Wallace Research Foundation to …

    2010
  • The neurobiology of the opsoclonus-myoclonus syndrome

    MR Pranzatelli - Clinical neuropharmacology, 1992 - ovid.com

    … because L-5-HTP is useful in … -5-HTP in the rat alters cortical 5-HT, receptors (399). Delineation of the role of each of these subtypes in human myoclonus and in the action of L-5-HTP is …

    1992247 citations
  • Behavioral Pharmacology of 5-ht

    P Bevan, PB Duphar, AR Cools, T Archer - 2013 - api.taylorfrancis.com

    … (5-HTP) on the behavioural response to carbidopa and 5-HTP. Mice were given carbidopa (25 mg/kg-1) followed by various doses of 5-HTP… Main graph shows the log dose of 5-HTP …

    201328 citations
  • The melatonin and aging sourcebook

    R Rozencwaig - 2020 - books.google.com

    … Disclaimer: Any information in this book is not intended to be a replacement for medical advice. Any person with a condition requiring medical attention should consult a qualified …

    20207 citations
  • Crosstalk between intestinal serotonergic system and pattern recognition receptors on the microbiota–gut–brain axis

    E Layunta, B Buey, JE Mesonero… - Frontiers in …, 2021 - frontiersin.org

    … -hydroxytryptophan (5-HTP), which then is converted into serotonin by aromatic amino acid decarboxylase (AAAD) (12). TPH reaction is a limitative step in the production of 5-HTP and, …

    202173 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-01-23. DSLD Label ID: 321884. 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.