Glutamine provides a critical link in muscle metabolism not shared by any other single amino acid. USN's L-Glutamine powder is pure, pharmaceutical grade L-Glutamine, an odorless and tasteless powder.

Glutamine is the most abundant single amino acid in the blood and in the intracellular free amino acid pool (most abundant amino acid in muscle tissue). It compromises 61% of the amino acid pool in skeletal muscle cell. In fact, Glutamine alone is responsible for 35% of the nitrogen that gets into the muscle cell. Glutamine literally drives muscle building nitrogen into the muscle cell where it is synthesized for growth.

Glutamine concentrations fall remarkably after training and remain low until complete recovery. What this means is, the very rigors of weight training "leak" nitrogen carrying glutamine from muscle tissue, counteract the fall in muscle protein synthesis, and improves nitrogen balance. Glutamine overcomes "The training Paradox".
  
Who can use it? 
People seeking improved athletic performance
People who need faster recovery times
People after a supplement to help stabilizes blood sugar
People requring strengthening of the immune system
People after a way to help decreases sugar cravings
 
Positives? 
Stimulates muscle protein synthesis by donating nitrogen to build proteins.
Increases growth hormone which can induce positive body composition and mood changes
Decreases muscle catabolism during exercise
Increases endurance by replenishing glycogen under conditions of glycogen depletion
Decreases muscle recovery time
Decreases the chances of illness/infection by boosting your immune system
Prevents over-training from high loads and long duration activities

More about Glutamine... 
You train with weights to build muscle. The more intensely you train, and the heavier the overload you subject your muscles to, the greater the growth response will be. Glutamine is a key factor in muscle growth, and to control the "skeletal muscle / whole body glutamate gradient". It is also critical in maintaining and building muscle tissue. The higher the muscle glutamate levels you can maintain, the less chance you have of falling into catabolism and the faster muscle will grow. But now there is more and more……..
We all know growth hormone is an important anabolic hormone. The most important anabolic hormone! It regulates the metabolic processes (including protein synthesis) in almost all tissue throughout the human life span. Growth hormone provokes several anabolic actions on skeletal muscle: the uptake of glucose and amino acids, activation of muscle protein synthesis, suppression of muscle protein catabolism, and the utilization of body fat for energy.

Ingredients and Recommended Use... 
Take on serving 2-5 times daily with water. Take one serving prior to workout and another serving following your workout. For best results, take a last serving 10 minutes prior to bedtime.