Curcumin is one of the best known and most widely used herbal preparations. Curcumin is the main active ingredient of turmeric, an aromatic spice from the root of the Curcuma longa. Turmeric has its origins in Indian cuisine, where it is an important part of the famous curry dishes under the names tumeric or turmeric. Traditionally, curcumin has been used to support the immune system and to maintain healthy liver function and digestion. In addition, it contributes to the maintenance of flexible joints and supports the mental balance and the functioning of the central and peripheral nervous system.