5-HTP 100 mg®

Amino Acids & Protein

Brand: NOW

CapsuleAmino acid/ProteinOn Market
Click to view full label

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

CODE 0106 V3

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.

5Dietary Attributes

Label states: Vegan, Vegetarian, Non-GMO, Gluten-Free, Kosher.

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 Veg Capsule(s) · 1 per day

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

Not Present

Other Ingredients

Rice FlourHypromellose

Target Groups

VeganVegetarianAdult (18 - 50 Years)KosherGluten FreeDairy Free

Label Claims

NutrientAll OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

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

Warnings & Precautions

Precautions re: All Other

Caution: For adults only.

Precautions re: Pregnant or Nursing or Prescription Medications

Not recommended for pregnant/nursing women. Consult physician if taking medications (especially antidepressants), or have a medical condition.

Precautions re: All Other

May cause drowsiness and mild transient GI symptoms. Take with food in case of GI upset.

Precautions re: Children

Keep out of reach of children.

Precautions re: Allergies

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Storage

Storage

Store in a cool, dry place after opening.

Formulation

Formula re: Contains

5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the seed of an African plant (Griffonia simplicifolia).

Formulation re: Does NOT Contain

Non-GMO

Formula re: Kosher

Triangle K

Formulation re: Vegetarian/Vegan

Vegetarian/Vegan

Formulation re: Does NOT Contain

Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.

FDA Statements

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

FDA Statement of Identity

A Dietary Supplement

Other Label Statements

General Statements: All Other Content

Natural color variation may occur in this product.

General Statements: All Other Content

Neurotransmitter Support Supports a Positive Mood

Seals/Symbols

Non-GMO Triangle K

General Statements: All Other Content

Amino Acids

General Statements: All Other Content

Family owned since 1968.

Seals/Symbols

GMP Quality Assured

Manufacturer & Distributor

Manufacturer

NOW Foods

395 S. Glen Ellyn Rd., Bloomingdale, IL, 60108, USA

Market Reference

$6.85 – $67570.00· 40 listings
  • NOW 5-HTP mg

    Natures Food Markets4.7(14000)
    $17.99
  • Now 5-HTP 100mg Chewable Tablets

    Walmart - Highland Health Foods4.5(198)
    $17.99
  • NOW Foods 5-HTP 50 mg 30 Capsules

    H-E-B4.7(14000)
    $6.85Lowest
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 100 mg, Neurotransmitter Support*, 60 Veg Capsules, Beige

    Walmart - Fruitful Yield4.7(21)
    $25.40
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 100 mg, Neurotransmitter Support*, 120 Veg Capsules, Blue

    Walmart - Fruitful Yield4.7(21)
    $38.38
  • (2 pack) NOW Supplements, 5-htp (5-hydroxytryptophan) 100 mg, Neurotransmitter Support*, 90 Chewables, Beige

    Walmart - Fruitful Yield4.6(12)
    $43.96
  • NOW Chewables 100 mg 5-HTP

    Instacart4.6(12)
    $67570.00
  • NOW Foods, 5-HTP con glicina, taurina e inositol, 60 cápsulas vegetales

    iHerb4.8(2000)
    $18.36

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 …

    20255 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 …

    202459 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 …

    202310 citations
  • 5-HTP: The natural way to overcome depression, obesity, and insomnia

    M Murray - 1999 - books.google.com

    … can influence brain and body chemistry, I recommend that it be used under medical … This form of 5-HTP is now widely availablewithout a prescription as a nutritional supplement. As you …

    199933 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
  • Secrets of 5-HTP: Nature's Newest Super Supplement

    W Conkling - 1998 - books.google.com

    … , and your overall health. In fact, its impressive performance in treating a wide range of … alternative to tryptophan is now known: 5HTP. As a supplement, 5-HTP is superior to tryptophan …

    1998

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.