**8. Conclusions**

This chapter gave an overview of the antioxidant supplements based on the international knowledge and experimentation of the authors, from the basic understanding of the antioxidant active groups (8 groups of polysaccharides, 01 group of proteins, and 05 groups of secondary metabolites) and the origin of these to the technological process of extracting and producing antioxidants to their opportunities and challenges in today's world are all demonstrated.
