OliPhenolia is a 100% natural, liquid food supplement made from olives and olive leaves from organic-biodynamic cultivation (Demeter-certified), a natural source of bioavailable polyphenols (including hydroxytyrosol, which belongs to the large family of natural polyphenols and whose properties have been the subject of numerous scientific studies in recent years). Polyphenols are found in fruit and vegetables and play an important role in the defence against harmful reactive oxygen species: free radicals.