with Advanced Probiotic Formula. ProGreens uses only the freshest, nutrient, scientifically processed whole foods to create the best-tasting, nutritious "green drink" available! Organic, gluten-free grasses are the foundation of the ProGreens formula, which includes standardized herbal extracts, blue-green and sea-algae, 8 strains of dairy-free probiotics, natural fibers, concentrated superfoods, and adaptogenic and support herbs.