Terraflora™ pro- and prebiotic complex = synbiotics. Terraflora is a broad spectrum synbiotic formula with a combination of spore-forming probiotics and advanced, nutrition-based, ancient prebiotics. Terraflora's advanced formula contains DNA verified strains. Terraflora's innovative combination of strains contains Ribospore™ (Bacillus pumilus) and Bacillus megaterium EM144™.