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L-Tryptophan 500 mg

product on market Capsule HBC Protocols 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
180
Servings
Amino acid/Protein
Product Type
0%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

500 mg
Market median: 500.0mg (70 products)

Other Ingredients

Magnesium Stearate
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use Take 1-3 capsules on an empty stomach 30 minutes before food consumption or sleep with water or fruit juice, or as directed by your health care consultant.

Warnings & Precautions

Warnings: Do not take this product if you are pregnant or breastfeeding. If you are taking SSRI's (selective serotonin reuptake inhibitors) please contact your health care professional before taking this product.

Keep out of the reach of children.

Formulation Notes

No wheat, no gluten, no soy, no dairy, no egg, no fish/shellfish, no nuts/tree nuts, no corn.

Additional Information

Description - Pharmaceutical Grade-Highest Purity L-Tryptophan is an essential amino acid It cannot be synthesized by the body. It must be obtained via food or supplements. L-Tryptophan is converted into serotonin (5-hydroxytryptomine) and melatonin in the body. It plays an important role in promoting relaxation, sleep, good mood, and may also help reduce carbohydrate cravings.

Metadata

Product Details

UPC / SKU7 90011 15056 5
DSLD Entry Date2012-07-25
Product TypeAmino acid/Protein
FormCapsule
DSLD ID11367
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.