Being made purely by L-Glutamine, Optimum Nutrition L-Glutamine Muscle Recovery Powder, 300g is also known for its unflavored versatility. If you want to rebuild the tissue, it is best to consume this supplement. It is also helpful in reducing muscle soreness. Just add it to protein and MRP shakes for better results. It is best in recovering the muscles. It is best to consume it before bed or after workout. This powder is the simple way to supplement your diet with this amino acid. You can add this powder in protein shakes and in fruit juices.