Biotin is a water-soluble vitamin from the B complex and is widespread in nature. Biotin produced in the large intestine is partly available to the body.
Manganese is a trace element that occurs mainly in plant-based, unrefined foods. Among other things, it plays a role in the structure of cartilage tissue.
Copper is an essential trace element that is involved in the endogenous antioxidant system and in the formation of connective tissue, pigments and hemoglobin.