A dedicated digestive-support blend so the other five groups can actually be absorbed.
The sixth group is a dedicated prebiotic and probiotic blend, positioned by the brand as infrastructure for the other five groups rather than a headline ingredient in its own right.
The reasoning is straightforward: antioxidants and phytonutrients only help if the digestive system can actually absorb them, and gut health plays a documented role in nutrient uptake.
TonicGreens doesn't specify which probiotic strains or in what colony-forming-unit counts are included, which is worth knowing if you're comparing this to a dedicated probiotic supplement.