From the manufacturer:

• Pure HPLC tested L glutamine Powder at a better value than competitors 5 grams per serving
• Supports increased cell volume, protein synthesis and glycogen replenishment
• Non stimulant formula stacks perfectly and can be take anytime stack with vitamins, creatine, BCAAs and other supplements
• Replenishes L glutamine, the most abundant amino acid in the body, supports immune function
• Flavorless and dissovles instantly; perfect for mixing with pre workout, post workout and protein powder
• Note: The manufacturer has rebranded MuscleTech Glutamine, 100 percent Ultra Pure L Glutamine, 60 Day Supply, 10.58 ounce (302 gram) with a change in label; The product itself remains the same; You may receive either the original or revised label

What Is Platinum Glutamine?

Platinum 100% Glutamine supplies 5g of glutamine per serving, which works to rapidly replenish the glutamine used during training. Glutamine is the most abundant non-essential free amino acid in your body – more than 20% of the total circulating amino acids in your body are glutamine. Your muscles are especially high in glutamine, making it extremely important for muscle metabolism.