Nutrex L-Arginine 1000 120 Capsules

L-Arginine is a precursor for nitric oxide synthase (NOS) — the enzyme that makes nitric oxide (NO) in endothelial cells. 

Nitric oxide is a vasodilator, meaning it helps relax and widen blood vessels, which can improve blood flow. 
Better blood flow can potentially:
Improve nutrient and oxygen delivery to muscles (useful during workouts) 

Nutrex Research
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. 

Supplement Facts
120 Capsules
Serving Size: 2 Capsules
Servings Per Container: 60
Amount Per ServingAmt%DV
L-Arginine1000 mg†
* % Daily Value is based on a 2,000 calorie diet. Your daily values may be higher or lower based on your calorie needs.
† Daily Value (DV) not established.

Other Ingredients: Microcrystalline Cellulose, Vegetable Capsule, Silicon Dioxide, Magnesium Stearate.