Mettle from the house of swasthum wellness is a brand aimed to provide world class health products. Having a highly trained in house R&D team enable us to provide international quality products having premium quality ingredients sourced from the best suppliers of the world. Mettle Glutamine is used in conjuction with Mettle Whey Proteins range. Mettle Glutamine helps you rebuild and recover from even toughest of workouts. Intense activity will deplete glutamine, an amino acid necessary protein and muscle synthesis.