Swanson L-arginine 500mg Capsules In Pakistan | Medicinemart.com.pk Swanson L-Arginine 500mg Capsules (60/100 Capsules) is intended to promote cardiovascular health, blood circulation, and sports performance. Nitric oxide, a substance that helps relax blood arteries and enhance blood flow, is produced in large part by the semi-essential amino acid L-arginine. Key Benefits Promotes healthy blood circulation Supports nitric oxide production Helps improve exercise performance and endurance Contributes to heart and cardiovascular health Assists in muscle recovery and oxygen delivery Supports overall energy and stamina How to Use Take 1 capsule 1–2 times daily with water