L-Arginine Nitric Oxide Booster: Supercharge Your Workouts This premium nitric oxide supplements stack includes: L Arginine, Niacin, Calcium, L Arginine Akg 2:1 Extract, L Citrulline, Malate Extract and Beta Alanine. These extra strength ingredients provide for a supercharged muscle pump. This supplement is also great for supporting your daily energy. Did You Know L-arginine is an amino acid that, when consumed, releases nitric oxide in the body to support your workout performance. It also plays a large role in recovery and muscle support. Premium Ingredients for a High Quality Supplement Beta Alanine: An amino acid that contains compounds that support muscle endurance during high-intensity exercise. L-Citrulline: This works similarly to L-arginine to support your strength and endurance as well as support protein synthesis. Why Choose Nature's Nutrition Premium Ingredients: We manufacture our L-Arginine Pre Workout Supplement with the highest quality ingredients available while following current good manufacturing practices and third party reviewing for purity and quality.