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L-Tryptophan

product on market Capsule Lidtke Safety: 96/100
96/100

This product looks safe

  • Vitamin B3: 60mg is 1.7× the Tolerable Upper Intake Level (35mg)
  • 80% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

The formula contains B vitamins, vitamin C, and magnesium, which are researched for their roles in energy metabolism and neurotransmitter synthesis. Evidence for these specific combinations in this context is limited, as indicated by the low evidence coverage. The profile maintains a high safety score of 96/100.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Vitamin B3: 60mg is 1.7× the Tolerable Upper Intake Level (35mg)

Label

Product Label

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

Label Data

1 Capsule(s)
Serving Size
40
Servings
Other Combinations
Product Type
80%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
90 mg (150% DV)
15 mg (885% DV)
11.5× RDA — above typical dose 13 studies (A:0, B:1)
60 mg (300% DV)
Exceeds UL by 1.7× (UL: 35 mg) 196 studies (A:5, B:63)
10 mg (500% DV)
7.7× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
15 mg (4% DV)
Market median: 500.0mg (1 products) 316 studies (A:8, B:159)
800 mcg (200% DV)
2.0× RDA — within safe limits 226 studies (A:10, B:105)
TryptoGold
1050 mg
Market median: 4002.0mg (1 products) 21 studies (A:0, B:2)
150 mg
Market median: 450.0mg (254 products) 243 studies (A:0, B:100)
125 mg
Market median: 500.0mg (180 products) 5 studies (A:0, B:1)

Other Ingredients

vegan Capsule
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions (Adults): Take one (1) to three (3) capsules or as directed by your doctor. Best if taken at bedtime or between meals. For children, consult your doctor.

Warnings & Precautions

Caution: Keep out of reach of children.

If you are pregnant, lactating, taking any medications (especially MAOIs, Tricyclics, or SSRIs), or have a medical condition, consult your doctor.

Discontinue use if adverse reaction occurs. Do not use if seal is damaged or missing.

Toll Free: 1-800-404-8185 Adverse events may be reported above.

Formulation Notes

No added gluten, yeast, wheat, rice, corn, soy, dairy, eggs, peanuts, fish, shellfish, sugar, artificial color or artificial flavor. Non-GMO

Lidtke's naturally produced Ultra-premium L-Tryptophan

Advanced serotonin formula Supports healthy sleep & mood

Purest on the planet

Additional Information

Thank you for choosing L-Tryptophan by Lidtke. We sincerely wish the best of health for you and your family.

Lidtke stands behind each product and guarantees customer satisfaction for 365 days from the date of purchase.

Keep lid tightly closed. Keep in a cool, dry place.

As certified by the manufacturer.

Metadata

Product Details

UPC / SKU6 30610 00325 4
DSLD Entry Date2021-12-18
Product TypeOther Combinations
FormCapsule
BrandLidtke
DSLD ID257272
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.