Kollagen 11000 Doppelherz drink bottles contains collagen hydrolysat, as well as essential vitamins and minerals, for health and vitality The German brand Doppellz creates high quality nutritional supplements that contain essential nutrients for the body, such as minerals, vitamins, trace elements and fatty acids Collagen is one of the main components of most connective and support tissues, ideal for proper functioning of muscles, bones, cartilage and tendons