XYMOGEN L-Lysine, 90 Vegetarian Capsules supplement bottle
XYMOGEN

L-Lysine, 90 Vegetarian Capsules

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 4 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
96
Brand Score Excellent

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.

Price Comparison

Vitacost $24.99 $0.56 / serving
Best Price

Price History

Tracked across major retailers. Updated periodically.

$27$26$25$24$23 Mar 12 $24.99
Vitacost

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

Brand Trust Report
XYMOGEN

Founded 2003 · Orlando, Florida, United States · 209 products · xymogen.com/

Certifications

4 certifications
Consumerlab Verified Source
Nsf Certified For Sport Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

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.2011-12-13Source
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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. Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, XYMOGEN, holds a brand trust score of 96/100 with 4 verified certifications including Consumerlab, Nsf Certified For Sport, Fda Gmp Inspections, Nsf Gmp.

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?

XYMOGEN L-Lysine, 90 Vegetarian Capsules has been analyzed for ingredient safety across all its components. 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 96/100 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 209 products in their lineup. They hold 4 verified certifications including Consumerlab, Nsf Certified For Sport, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. 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. 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.