About this item: Supports healthier circulation, stamina and energy. Arginine is not only thought to support blood flow and muscle growth, but it is also a popular supplement that supports energy production, stamina, and vascular function, making it the perfect supplement for men and women of all ages and activity levels. Many people use it for big pumps and nitric oxide production. L-arginine provides a powerful kickstart for nitric oxide production in the body, which means more blood flow to the muscles. More blood flow supports a bigger, stronger, longer pump. Also known as: Men's Workout Supplement, Men's Nitric Oxide Supplement, Men's Body Building Supplement, L-Arginine, Nitrous Oxide Supplement.