Nutrex L-Arginine 1000 120 Capsules

Support vascular health (endothelial function) 
Influence blood pressure in some contexts — some animal studies and human research suggest L-arginine can lower blood pressure by increasing NO bioavailability. 
 
What Is L-Arginine & How It Works
Role in nitric oxide (NO) production: L-Arginine is a substrate (building block) for the enzyme nitric oxide synthase, which produces nitric oxide. NO is a key molecule that helps blood vessels relax (vasodilation), improving blood flow. 
 
Other roles: Beyond NO, L-Arginine is involved in protein synthesis, the urea cycle, and production of other metabolites (like creatine). 
 
Vascular benefits: Supplementation may help improve endothelial (blood vessel inner lining) function, reduce platelet aggregation, and support vascular health.