Brand: NOW

CapsuleOn Market
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Net Contents

120 Veg Capsule(s)

Serving Size

1 Veg Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 33739 00106 1

Product Version

Not specified

Suggested Use

Suggested Usage: Take 1 capsule daily; preferably on an empty stomach at bedtime.

Market Reference

$5.09 – $64.26· 40 listings
  • Now 5 HTP mg

    Natures Food Markets4.7(9800)
    $14.39
  • NOW Foods 5-HTP 100 mg Chewable

    Target4.7(9800)
    $19.99
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 100 mg, Neurotransmitter Support*, 120 Veg Capsules, Blue

    Walmart - Fruitful Yield4.7(9800)
    $38.38
  • Now 5-HTP 100mg Chewable Tablets

    NOW4.7(9800)
    $22.39
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 100 mg, Neurotransmitter Support*, 60 Veg Capsules, Beige

    Walmart - Fruitful Yield4.7(9800)
    $25.40
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 100 mg, Neurotransmitter Support*, 90 Chewables, Beige

    Walmart - Fruitful Yield4.7(9800)
    $43.96
  • Now Foods 5-HTP 200 mg 120 Veg Capsules

    Target4.8(1900)
    $36.99
  • (2 pack) NOW Foods 5-htp, 60 Veg Capsules, Size: 4.30

    Walmart - Fruitful Yield4.8(1900)
    $36.64

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.

  • Mastel's Health Foods

    4.8 (157)

    Vitamin & supplements store

    1526 St Clair Ave, St Paul, MN 55105

  • Great Health Nutrition

    5.0 (26)

    Vitamin & supplements store

    1360 University Ave W, St Paul, MN 55104

  • Nutrition City - Vitamins & Supplements Store

    4.7 (159)

    Vitamin & supplements store

    2108 Lyndale Ave S, Minneapolis, MN 55405

  • GNC

    3.3 (64)

    Vitamin & supplements store

    4 Signal Hills Center c, West St Paul, MN 55118

  • The Vitamin Shoppe

    4.3 (148)

    Vitamin & supplements store

    1777 County Road B2 W Ste 215B, St Paul, MN 55113

  • Great Health Nutrition

    4.8 (12)

    Vitamin & supplements store

    1668 S Robert St, West St Paul, MN 55118

  • GNC

    3.2 (41)

    Vitamin & supplements store

    3324, Promenade Pl #102, Eagan, MN 55121

  • The Vitamin Shoppe

    4.4 (188)

    Vitamin & supplements store

    6996 France Ave S Ste 200, Minneapolis, MN 55435

Research & Studies

  • The Impact of 5-Hydroxytryptophan Supplementation on Cognitive Function and Mood in Singapore Older Adults: A Randomized Controlled Trial

    S Li, CN Sutanto, X Xia, JE Kim - Nutrients, 2025 - mdpi.com

    … capsules (NOW Foods, Bloomingdale, IL, USA) 20–30 min before bedtime or the control … were cognitively healthy and had not previously taken 5-HTP supplementation, 100 mg was …

    20254 citations
  • The impact of 5-hydroxytryptophan supplementation on sleep quality and gut microbiota composition in older adults: A randomized controlled trial

    CN Sutanto, X Xia, CW Heng, YS Tan, DPS Lee, J Fam… - Clinical Nutrition, 2024 - Elsevier

    … part of health and there is … of 5-HTP supplementation for improving sleep quality in older adults is unclear. Hence, the aim of this study is to assess the impact of 5-HTP supplementation …

    202455 citations
  • The Effects of 5-HTP on Body Composition: An 8-Week Preliminary RCT

    C Evans, V Mekhail, J Curtis, P Czartoryski… - … Dietary Supplements, 2023 - Taylor & Francis

    … in healthy individuals (… of 5-HTP in exercise-trained individuals. Therefore, the purpose of this investigation was to determine the effects of supplementing with 100 mg daily of 5-HTP on …

    202311 citations
  • Nutritional supplements

    JE Settle - … and Alternative Therapies in Mental Health, 2002 - Elsevier

    … acids, SAMe and 5-HTP, in mental health and treatment. … 5-HTP is a modified version of the essential amino acid, tryptophan. Tryptophan obtained in the diet is converted into 5-HTP…

    20024 citations
  • 5-HTP, the natural SSRI alternative

    J South - aging-matters.com

    … and then 5-HTP is converted to 5-HT by a vitamin B6 dependant enzyme. Yet now, thanks to … is a natural substance normally made by the brain, without medical supervision prudence …

  • Targeting Serotonin through Nutrition: Systematic Review of Tryptophan and 5-HTP for Mood and Cognitive Dysfunction

    R Ajax - researchgate.net

    … Healthcare practitioners may consider TRP or 5-HTP supplementation for patients with … compelling evidence that tryptophan and 5-HTP supplementation offer measurable benefits for …

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-07-24. DSLD Label ID: 204643. 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.