OPA Nutrition – L-Arginine – Nitric Oxide Power Blend OPA Rhino Series Power your workouts and support healthy circulation with OPA Nutrition’s L-Arginine. Each serving delivers 1400 mg of our Amino Power Blend — combining L-Arginine, L-Citrulline, Beta Alanine, and Niacin — to naturally promote nitric oxide production, endurance, and stamina. This advanced formula helps optimize blood flow, support vascularity, and keep your energy levels strong so you can perform at your peak, in and out of the gym. Extra-strength and science-backed, it’s designed to fuel daily performance and vitality. ✔ 1400 mg Amino Power Blend ✔ Promotes nitric oxide & circulation ✔ Supports stamina, energy & endurance ✔ Enhances vascularity & performance ✔ Non-GMO, lab tested, GMP certified Daily nitric oxide support for strength, energy, and vitality. †These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.