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L-Tryptophan 500 mg

product on market Capsule Bluebonnet Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • Limited research evidence available for ingredients
B Label Compliance Grade
Label

Product Label

Label for L-Tryptophan 500 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
Amino acid/Protein
Product Type
0%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

500 mg
Market median: 500.0mg (70 products)

Other Ingredients

Kosher Vegetable Capsules Vegetable Magnesium Stearate Vegetable Cellulose
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Info

Product Information

Directions for Use

Directions: As a dietary supplement, take one capsule daily or as directed by a healthcare practitioner.

Warnings & Precautions

Caution: Do not use this product, if you are pregnant, trying to conceive, breastfeeding or taking a prescription antidepressant. Consult your healthcare practitioner before use if you have a medical condition or if you are taking any prescription medications.

Formulation Notes

Bluebonnet’s L-Tryptophan 500 mg Capsules contain a vegetarian source of the free-form amino acid L-tryptophan called TryptoPure from Ajinomoto, the world-class, quality leader in the production and purity of pharmaceutical-grade amino acids since the 1950’s.

Bluebonnet’s L-Tryptophan 500 mg Capsules contain a vegetarian source of the free-form amino acid L-tryptophan called TryptoPure from Ajinomoto, the world-class, quality leader in the production and purity of pharmaceutical-grade amino acids since the 1950’s.

Bluebonnet’s KOF-K Certification #K-0000700

Made with non GMO ingredients

Vegan

Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybeans. Also free of yeast, gluten, barley, rice, sodium and sugar.

Additional Information

Available in easy-to-swallow vegetable capsules for maximum assimilation and absorption.

0093E

Made with non GMO ingredients

Pharmaceutical grade

Free-form amino acid

Vegan

K Parve

Gluten Free

Metadata

Product Details

UPC / SKU7 43715 00093 3
DSLD Entry Date2018-05-24
Product TypeAmino acid/Protein
FormCapsule
DSLD ID176706
Data Updated2026-04-11
Research

Research Evidence

29
Research Sources
48
Avg Quality
19
Rct
5
Meta Analysis
3
Systematic Review
2
Clinical Trial
B Prebiotic and probiotic supplementation and the tryptophan-kynurenine pathway: A systematic review and meta analysis
Meta Analysis Neuroscience and biobehavioral reviews 2021 PubMed DOI
B Tryptophan and 5-hydroxytryptophan for depression
Systematic Review The Cochrane database of systematic reviews 2001 PubMed
B Tryptophan and 5-hydroxytryptophan for depression
Systematic Review The Cochrane database of systematic reviews 2002 PubMed
B The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression
Meta Analysis Nutrition reviews 2022 PubMed DOI
B No effects of acute tryptophan depletion on anxiety or mood in weight-recovered female patients with anorexia nervosa
Rct European archives of psychiatry and clinical neuroscience 2023 PubMed DOI
C The association between tryptophan levels and postpartum mood disorders: a systematic review and meta-analysis
Meta Analysis BMC psychiatry 2022 PubMed DOI
C A systematic review of the effect of L-tryptophan supplementation on mood and emotional functioning
Systematic Review Journal of dietary supplements 2021 PubMed DOI
C Comparison between Acupuncture and Nutraceutical Treatment with Migratens® in Patients with Fibromyalgia Syndrome: A Prospective Randomized Clinical Trial.
Rct Nutrients PubMed DOI
C Intake of Lactiplantibacillus plantarum HEAL9 Improves Cognition in Moderately Stressed Subjects: A Randomized Controlled Study.
Rct Nutrients PubMed DOI
C Are tryptophan and 5-hydroxytryptophan effective treatments for depression? A meta-analysis
Meta Analysis The Australian and New Zealand journal of psychiatry 2002 PubMed
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.