Nutricost combines two of the bodys most important building blocks into one easy-to-take supplement. The amino acids: L-Arginine and L-Ornithine. L-arginine and L-ornithine, or simply arginine and ornithine, are two amino acids that share a lot in common in spite of one significant difference. Your body relies on both arginine and ornithine amino acids to function properly, and they work together, and separately. – Combines 2 Essential Amino Acids: L-Arginine and L-Ornithine – Popular With Athletes & Other Active Individuals – 750mg of L-Arginine + L-Ornithine Per Serving (180 Servings) – Manufactured In a GMP Compliant, FDA Registered Facility – Non-GMO, Gluten Free