Anthocyanins belong to water-soluble plant pigments. They are derivatives of 2-phenylbenzopyrylium. Due to the common occurrence (among others in fruit) they are components of human diet. Owing to scientific research they have become not only food products but also therapeutic agents. They exhibit, among others, antioxidative and anti-inflammatory activity, they also show favorable effect in the treatment of some types of neoplasms.