Blackstone Labs Glutamine – Improves Cell Volumization, Optimizes Recovery & Muscle SupportPure Glutamine!Glutamine provides benefits for protein synthesis, improves muscle cell volumization, and optimizes recovery in the gym. Glutamine, by Blackstone Labs, contains 99.5% pure Glutamine for muscle support. Note: Manufacturers continually change product specifications. While we try our best to keep product descriptions up to date, they do not necessarily reflect the latest information available from the manufacturer. We are not responsible for incorrect or outdated product descriptions and/or images.