🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Tablet(s) Serving Size
Amino acid/Protein Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

📊 Market median: 100.0mg (116 products) 📚 15 studies (Tier A: 0, B: 3)
This product: 50mg

Other Ingredients

Dicalcium Phosphate Microcrystalline Cellulose Croscarmellose Sodium Stearic Acid Magnesium Stearate Silica Pharmaceutical Glaze

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (78% of products) Nutrient (52% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free Sugar Free

Product Information

📋 Directions for Use

Directions: Take 1 tablet, with meals as a dietary supplement or as directed by a healthcare professional.

⚠️ Warnings & Precautions

Keep out of reach of children.

Do not purchase if seal is broken.

🧪 Formulation Notes

No sugar, starch, yeast, wheat, soy, artificial colors, flavors or preservatives Gluten free

Additional Information

Protect from heat, light & moisture. Store in a cool, dry place.

Made in the U.S.A.

ITEM: 386 / TC: D88605N2

Trusted since 1972

Natural vitamins

Pharmacist recommended Supports a positive mood Promotes increased levels of serotonin

Product Details

UPC / SKU 0 35046 00386 9
DSLD Entry Date 2017-03-24
Product Type Amino acid/Protein
Form Tablet or Pill
Brand Windmill
DSLD ID 71547
Data Updated 2026-04-11

Research Evidence

21 Research Sources
53 Avg Quality Score
11 Systematic Review
6 Rct
4 Meta Analysis
B Combination pharmacotherapy for the treatment of fibromyalgia in adults
Systematic Review The Cochrane database of systematic reviews 2018
B Tryptophan and 5-hydroxytryptophan for depression
Systematic Review The Cochrane database of systematic reviews 2001
B Tryptophan and 5-hydroxytryptophan for depression
Systematic Review The Cochrane database of systematic reviews 2002
B The impact of 5-hydroxytryptophan supplementation on sleep quality and gut microbiota composition in older adults: A randomized controlled trial
Rct Clinical nutrition (Edinburgh, Scotland) 2024
B The Impact of 5-Hydroxytryptophan Supplementation on Cognitive Function and Mood in Singapore Older Adults: A Randomized Controlled Trial
Rct Nutrients 2025
B The Efficacy of Different Triptans for the Treatment of Acute Headache in Pediatric Migraine: A Systematic Review
Systematic Review Indian pediatrics 2023
B The effect of therapeutic massage combined with conventional therapy in children with functional dyspepsia: a systematic review and meta-analysis
Systematic Review Frontiers in pharmacology 2025
C Sleep disorders in children
Systematic Review BMJ clinical evidence 2010
C Effects of 5-hydroxytryptophan on distinct types of depression: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2020
C Investigating genetic links between biological aging and adverse pregnancy outcomes
Meta Analysis Biogerontology 2025
View all evidence for 5 Htp →

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