L-Lysine 500 is a single-ingredient amino acid supplement, falling under the protein category. Each tablet provides 500 mg of L-Lysine, ensuring complete transparency for its only active component. With just one ingredient, the product is focused solely on delivering L-Lysine. This product received an N+ Score of 46, resulting in an 'F' grade, placing it in the below-average tier for overall quality and potential efficacy. While it provides L-Lysine, the 'F' grade suggests that other quality criteria were not met. It is designed for individuals specifically looking for a standard dose L-Lysine supplement.
About This Product
L-Lysine 500 by GNC is a protein supplement containing 1 active ingredients. It has earned an N+ Score of 46/100 (Grade F).
N+ Score Breakdown
Are key ingredients present at clinically effective doses based on research?
Does the product include all expected ingredients for its supplement category?
Are individual ingredient amounts clearly disclosed without proprietary blends?
Does the formula include a breadth of beneficial compounds from multiple pathways?
Strengths
- +Fully transparent label with individual ingredient amounts disclosed
Weaknesses
- −Missing several expected ingredients for its category
Ingredient Analysis (1 ingredients)
| Ingredient | Amount | Dose Adequacy |
|---|---|---|
| L-Lysine | 500.000 mg | N/A |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.





