Solaray L-Arginine 500mg Veg Capsules are dietary supplements that support cardiovascular health, circulation and overall vitality. It delivers 500mg of essential amino acid L-Arginine. L-Arginine is an amino acid that, most notably, supports cardiovascular health. In the body, L-Arginine converts to nitric oxide (NO) providing nutritive support for normal blood flow, blood pressure, and overall cardiovascular health. Additionally, L-Arginine provides nutritive support for normal wound healing, kidney function, hormone balance, and immune system function. Beyond heart health, L-Arginine plays a vital role in protein production, muscle tissue development, wound healing, hormone balance, and immune system function. It may also support athletic performance by encouraging circulation and oxygen delivery to muscles. Formulated with L-Arginine HCl for optimal absorption, this supplement is lab-verified and the bottle is 100% PCR for quality and purity.