L-arginine is an amino acid that may provide several health benefits by producing nitric oxide (NO), a molecule that improves circulation by relaxing blood vessels. The supplement is often used for cardiovascular support, athletic performance, and wound healing.
Cardiovascular and circulatory benefits
Lowers blood pressure: Studies have shown that oral L-arginine can help reduce blood pressure in healthy individuals and those with existing hypertension.
Eases chest pain (angina): For people with angina, L-arginine can decrease symptoms and improve quality of life and exercise tolerance.
Can combat peripheral arterial disease (PAD): By increasing blood flow, L-arginine may improve symptoms of PAD, a condition that causes poor circulation in the limbs.