Juven therapeutic nutrition drink mix boosts collagen and lean body mass production, supporting and speeding wound healing.. The powder is suitable for oral or tube consumption and mixes easily with water to provide 95 calories per serving.. Juven uses CaHMB, a metabolite of leucine, to support new tissue growth, stabilize muscle cell membranes and slow breakdown.. It also contains arginine for building proteins and improving blood flow.. Glutamine and vitamin C strengthen the immune system.. Juven fruit punch powder for adults is gluten- and lactose-free as well as kosher..