The scientific evidence of the health benefits linked to fruits and vegetables consumption is growing, and food supplements may represent an effective method to provide additional bioactive F&V compounds to consumers. Among these bioactives, polyphenols have been widely studied and it looks like they might be responsible for a great share of the preventative effects of plant food based diets. The aim of this work was to characterize the polyphenolic composition of three plant-based food supplements designed to integrate and increase the daily intake of dietary phenolic compounds. The supplements are blends of berries, fruits, or vegetables made from a total of 36 different edible food plants. Using cut-edge analytical instruments, we have identified 119 (poly)phenolic compounds in the supplements, showing a richness and a variety that had never been reported before for this type of products. The contribution of these food supplements to the daily intake of (poly)phenolic compounds and, in turn, the potential contribution of such intake to health are discussed.