Arginine & Citrulline Powder
NOW Sports Arginine & Citrulline Powder is an amino acid supplement designed to provide L-Arginine and L-Citrulline. It received an N+ Score of 32 and a grade of F, placing it in the 'poor' tier. The product lists 2 total ingredients with 100% label transparency, providing 1.5g of L-Arginine and 1.5g of L-Citrulline per serving. However, research suggests that both L-Arginine and L-Citrulline are underdosed at these amounts when aiming for commonly studied clinical benefits, which typically require higher dosages. This product might be considered by those looking for a foundational amino acid supplement, but its low N+ Score indicates that the dosages provided may not be sufficient for significant physiological effects.
About This Product
Arginine & Citrulline Powder by NOW Sports is a protein supplement containing 2 active ingredients. It has earned an N+ Score of 32/100 (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
- −Several ingredients below clinically effective doses
- −Missing several expected ingredients for its category
Ingredient Analysis (2 ingredients)
| Ingredient | Amount | Dose Adequacy |
|---|---|---|
| L-Arginine | 1.500 Gram(s) | Under |
| L-Citrulline | 1.500 Gram(s) | Under |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.