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XYMOGEN L-Lysine, 90 Vegetarian Capsules supplement bottle
XYMOGEN

L-Lysine, 90 Vegetarian Capsules Review

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 7 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
100
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Lysine (as L-Lysine HCl) 1 g *
Bioavailability Excellent

Absorption Rating

  • L-Lysine (as L-Lysine HCl) Good
Other Ingredients Excellent

Fillers & Additives

  • HPMC (Capsule)
  • Medium-Chain Triglyceride Oil
  • Stearic Acid
  • Magnesium Stearate
  • Silica
Efficacy Excellent

Dosage Analysis

  • L-Lysine (as L-Lysine HCl) 1 g Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Lysine (as L-Lysine HCl) 1 g *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

HPMC (Capsule) Safe

It is used to encapsulate the supplement ingredients.

Medium-Chain Triglyceride Oil Generally_safe
Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
XYMOGEN

Founded 2003 · Orlando, Florida, United States · 398 products · xymogen.com/

Certifications

7 certifications
Consumerlab Source available Primary evidence
Nsf Certified For Sport Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Nsf Gmp Source available Primary evidence
NSF Certified for Sport Supporting evidence unavailable
NSF Contents Certified Supporting evidence unavailable
NSF Certified Supporting evidence unavailable

Transparency

6 claims
Third Party Testing Claim — Verified Evidence available Evidence
Coa Availability — Verified Evidence available Evidence
Testing Lab Disclosure — Verified Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

1 incident
Fda Warning The warning letter cited violations of current Good Manufacturing Practice (cGMP) regulations for dietary supplements, including failure to establish product specifications for the identity, purity, strength, and composition of the finished dietary supplement, and failure to conduct at least one appropriate test or examination to verify the identity of a dietary ingredient. The letter also noted that several products were considered new drugs because they were not generally recognized as safe and effective for their intended use.2011-12-13 Source available Primary source
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Frequently Asked Questions
Is XYMOGEN L-Lysine, 90 Vegetarian Capsules a good supplement?

XYMOGEN L-Lysine, 90 Vegetarian Capsules received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 45 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, XYMOGEN, holds a brand trust score of 100/100.

What are the ingredients in XYMOGEN L-Lysine, 90 Vegetarian Capsules?

XYMOGEN L-Lysine, 90 Vegetarian Capsules contains 1 active ingredients: L-Lysine (as L-Lysine HCl) (1 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is XYMOGEN L-Lysine, 90 Vegetarian Capsules safe to take?

GoodSupp reviewed the inactive-ingredient data available for XYMOGEN L-Lysine, 90 Vegetarian Capsules. All 5 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is XYMOGEN a trustworthy supplement brand?

XYMOGEN receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2003 and headquartered in Orlando, Florida, United States, the company offers 398 products in their lineup. Note: XYMOGEN has 1 historical regulatory incident 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 — read our methodology. 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.