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).

Arginine is an amino acid found in proteins.

Take 2–4 capsules (1–2 g) 30–45 minutes before training or with food. Well tolerated by most adults. 100 capsules per bottle.