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L-Tryptophan 1000 mg

product on market Tablet or Pill Best Naturals 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 1000 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
60
Servings
Amino acid/Protein
Product Type
0%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

1000 mg
Market median: 500.0mg (70 products)

Other Ingredients

Dicalcium Phosphate Cellulose Silica Vegetable Stearate Stearic Acid Croscarmellose Sodium Pharmaceutical Glaze
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, take one (1) tablet one to three times daily on an empty stomach, with final dose at bedtime, or as directed by your qualified healthcare professional. Consider taking these other Best Naturals products: Inositol and Magnesium.

Warnings & Precautions

Keep out of the reach of children.

Do not use if safety seal is broken or missing.

Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur.

Formulation Notes

L-Tryptophan is an essential amino acid; therefore, it is not synthesized by the body and must be obtained from the diet. L-Tryptophan is critical for the production of serotonin and melatonin, which help to support a positive mood, healthy sleep patterns, and immune system function. Best Naturals L-Tryptophan is extremely pure and is regularly tested to ensure the highest standards of quality. Certain research publications indicate that it may help support the following: Supports circulation & positive mood Supports relaxation & restful sleep Supports healthy immune function

Premium formula

3rd party lab tested

No artificial color, flavor or sweetener, no preservatives, no sugar, no corn, no soy, no egg, no lactose, no gluten, no wheat, no fish, no yeast.

Additional Information

Keep in cool, dry place.

Made in USA

GMP Good Manufacturing Practice Product

For additional information call 1-877-659-6004

Metadata

Product Details

UPC / SKU8 17716 01583 5
DSLD Entry Date2022-06-16
Product TypeAmino acid/Protein
FormTablet or Pill
DSLD ID270649
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
View all evidence for Tryptophan →
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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.