Metabolic Maintenance L-Tryptophan, 500 mg, 60 Capsules supplement bottle
Metabolic Maintenance

L-Tryptophan, 500 mg, 60 Capsules

What We Researched
2 active ingredients analyzed · 1 inactive ingredient decoded · 2 retailers compared · Last updated: Mar 2026
81
Product Score Good
68
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B-6 (as Pyridoxine HCl) 10 mg 588%
L-Tryptophan (TryptoPure™) 500 mg *
Bioavailability Very Good

Absorption Rating

  • Vitamin B-6 (as Pyridoxine HCl) Fair
  • L-Tryptophan (TryptoPure™) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetarian Cellulose Capsule
Efficacy Fair

Dosage Analysis

  • Vitamin B-6 (as Pyridoxine HCl) 10 mg Effective
  • L-Tryptophan (TryptoPure™) 500 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B-6 (as Pyridoxine HCl) 10 mg 588%
L-Tryptophan (TryptoPure™) 500 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetarian Cellulose Capsule Safe

It provides a vegetarian-friendly way to deliver the supplement.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$31$30$29$28$27 Mar 12 $29.00
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Metabolic Maintenance

Founded 1984 · Sisters, Oregon, United States · 67 products · allergyresearchgroup.com/metabolic-maintenance

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed Source

Violation History

2 incidents
Prop 65 Lead2011-07-19Source
Lawsuit Failure to provide clear and reasonable warnings about exposure to lead in various supplement products.2011Source
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Frequently Asked Questions
Is Metabolic Maintenance L-Tryptophan, 500 mg a good supplement?

Metabolic Maintenance L-Tryptophan, 500 mg, 60 Capsules received a product quality score of 81/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 2 active ingredients All 1 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Metabolic Maintenance, holds a brand trust score of 68/100.

What are the ingredients in Metabolic Maintenance L-Tryptophan, 500 mg?

Metabolic Maintenance L-Tryptophan, 500 mg contains 2 active ingredients: Vitamin B-6 (as Pyridoxine HCl) (10 mg), L-Tryptophan (TryptoPure™) (500 mg). Notable high-dose ingredients include Vitamin B-6 at 588% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Metabolic Maintenance L-Tryptophan, 500 mg safe to take?

Metabolic Maintenance L-Tryptophan, 500 mg, 60 Capsules has been analyzed for ingredient safety across all its components. All 1 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Metabolic Maintenance a trustworthy supplement brand?

Metabolic Maintenance receives a brand trust score of 68/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1984 and headquartered in Sisters, Oregon, United States, the company offers 67 products in their lineup. Note: Metabolic Maintenance has 2 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.