Brand: NOW

CapsuleOff Market
Click to view full label

Net Contents

180 Veg Capsule(s)

Serving Size

1 Veg Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 33739 00101 6

Product Version

Not specified

Suggested Use

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

Market Reference

$4.88 – $89.99· 40 listings
  • Now 5 HTP mg

    iHerb4.7(3000)
    $4.88Lowest
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 50 mg, Neurotransmitter Support*, 90 Veg Capsules, Other

    Walmart - Fruitful Yield4.7(3000)
    $26.24
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 50 mg, Neurotransmitter Support*, 180 Veg Capsules, Beige

    Walmart - Fruitful Yield4.7(3000)
    $40.12
  • (2 pack) NOW Foods 5-htp, 60 Veg Capsules, Size: 4.30

    Walmart - Fruitful Yield4.8(1900)
    $36.64
  • Now Foods 5-HTP 200 mg 120 Veg Capsules

    Target4.8(1900)
    $36.99
  • NOW Foods 5-HTP Double Strength 200 mg 60 Veg Capsules

    NOW4.8(1900)
    $29.99
  • NOW Foods 5-HTP 100 mg Chewable

    Target4.7(9800)
    $19.99
  • 5HTP Now View Nutrition Facts

    The supplements factory
    $30.00

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.

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
  • Sleep Supplement Dosage and Timing Guide: When to Take What

    WMI Best, G vs L-Threonate - smartersupplementreviews.com

    … 5-HTP converts to serotonin, which your body then converts to … Take 100–300 mg on an empty stomach 30–60 minutes … — discuss your supplement plan with your healthcare provider or …

  • A Forensic Investigation into Neuro-Logistics, and Why the Perfect Precursor (5-HTP) Demands the Keyora 8-in-1 Ecosystem.

    I was Fortified - keyorahealth.com

    … is accidentally sabotaging your mental health, and why Tryptophan – … Now we will see why the Gut Serotonin can’t get in. … This is why so many people quit 5-HTP supplements after three …

  • Herbal appetite suppressants used to aid weight loss

    S Malik, S Patel, DH Kuntawala, GNN Neba Ambe… - Phytochemistry …, 2025 - Springer

    … now prohibited in many countries. The latter does not necessarily mean that the drugs are not available; a supplement … in functional foods or as nutraceuticals for healthy routine. Herbal …

    20255 citations
  • 5-HTP for Weight Loss: Clinical Trials, Dosing Protocol & GLP-1 Comparison

    ATA June, AT Amarfei - sureokgo.com

    … This raises an intriguing possibility: 5-HTP supplementation might not just produce … I've lost 13kg in the last 4 months, and now my BMI is back in the healthy range. For the first …

  • The effect of 5-hydroxytryptophan, a serotonin precursor, on adults with high levels of Attention Deficit Hyperactivity Disorder traits: A randomised, controlled trial

    E Jackson, T Riley, PG Overton - PloS one, 2026 - journals.plos.org

    2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2015-11-24. DSLD Label ID: 53318. 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.