A prebiotic and a probiotic, each with its own published record.
Bimuno® GOS is a prebiotic: the food beneficial gut bacteria use. L. plantarum DR7 is a single named strain studied for how it supports gut-brain axis function. Together they are a complementary synbiotic, two ingredients each carrying its own human evidence, in both formulas.
Every serving carries 1.39 g of active GOS and 1 billion CFU of DR7. Across your morning and evening servings that is at least 2.75 g of active GOS a day.