Swanson L-Arginine 500 mg 100 capsules.

Swanson L-Arginine 500 mg provides free-form L-arginine – a conditionally essential amino acid and the main dietary precursor of nitric oxide (NO).

Nitric oxide relaxes and widens blood vessels (vasodilation), improving blood flow to working muscles during exercise. Arginine also supports healthy blood pressure, the immune system, and protein synthesis.

Take 2-4 capsules (1-2g) 30-45 minutes before exercise or with food for cardiovascular support. Well tolerated by most adults. 100 capsules per bottle.