GNC's L-Arginine 1000 mg is a straightforward amino acid supplement, delivering 1000 mg of L-Arginine per caplet. L-Arginine is commonly used as a precursor to nitric oxide, which research suggests may support blood flow and cardiovascular health. The 1000 mg dosage provided is at a clinically studied level for many of its intended uses. This product features a single ingredient and demonstrates 100% label transparency, contributing to its N+ Score of 64 and a 'D' grade, placing it in the average tier. It is designed for those who wish to specifically supplement L-Arginine at an effective dose.
About This Product
L-Arginine 1000 mg by GNC is a protein supplement containing 1 active ingredients. It has earned an N+ Score of 64/100 (Grade D).
This product features a fully transparent label with individual ingredient amounts disclosed, and key ingredients are present at clinically effective doses based on peer-reviewed research.
Notable clinical-dose ingredients include L-Arginine.
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
- +Key ingredients at clinically effective doses
- +Fully transparent label with individual ingredient amounts disclosed
- +1 ingredient(s) at clinical dose levels
Weaknesses
- −Missing several expected ingredients for its category
Ingredient Analysis (1 ingredients)
| Ingredient | Amount | Dose Adequacy |
|---|---|---|
| L-Arginine | 1000.000 mg | High |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.