Double Strength 5-HTP 200 mg®

Other Combinations

Brand: NOW

CapsuleOther CombinationsOff Market
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Net Contents

60 Veg Capsule(s)

Serving Size

1 Veg Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 33739 00108 5

Product Version

CODE 0108B V6

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

6Active Ingredients

6 distinct active ingredients are disclosed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

2% Daily Value Coverage

2 ingredients report a %DV; 2 meet or exceed 100% DV.

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% Daily Value
Niacin(Niacinamide, Vitamin B3)20 mg125%
Vitamin B6(Pyridoxine Hydrochloride)2 mg118%
5-Hydroxytryptophan(Griffonia simplicifolia Seed Extract)200 mg
Glycine100 mg
Taurine100 mg
Inositol100 mg

Not Present

Other Ingredients

HypromelloseAscorbyl PalmitateSilicon Dioxide

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 tryptophan and serotonin, is extracted from the seed of an African plant (Griffonia simplicifolia).

Formula re: Contains

NOW Double Strength 5-HTP has twice the 5-HTP (200 mg per capsule) as in our regular strength product (100 mg per capsule).

Formula re: Contains

With Glycine, Taurine & Inositol

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 Family owned since 1968.

Seals/Symbols

GMP Quality Assured

Manufacturer & Distributor

Manufacturer

NOW Foods

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

Where to Buy Locally

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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 … , where 50–200 mg were administered and demonstrated … healthy and had not previously taken 5-HTP supplementation, …

    20255 citations
  • Secrets of 5-HTP: Nature's Newest Super Supplement

    W Conkling - 1998 - books.google.com

    … new supplements available in health food stores today. … effective alternative to tryptophan is now known: 5HTP. As a … or 200 milligrams of 5-HTP per day is as effective as 1,000 or 2,000 …

    1998
  • Keyora Nutritional Neurology: 5-HTP Episode (1)-The Science of Sincerity (Vol II)

    W diagnose this as a Neuro - zhuanlan.zhihu.com

    … The question now is: How did we get here? How did the … We will explain why “eating healthy” is no longer sufficient to … Many supplement companies use massive doses of 5-HTP (…

  • 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
  • 5-HTP Withdrawal

    P Tardner - 2022 - ijest.org

    … a nutritional supplement in many health food and vitamin stores around the world today, and … You should also consult a health care provider if you’re taking 5-HTP for a serious condition…

    2022
  • 5-HTP for Dissociation: Supporting Serotonin and Emotional Stability

    TY Order, USD Australia, EUR Finland, EUR France… - moodriselabs.com

    … 5-HTP on mood and emotional regulation: A 2010 review in Neuropsychiatric Disease and Treatment found that 5-HTP … showed that 5-HTP supplementation helped normalize serotonin …

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: 204644. 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.