Good news! Your product is perfectly safe. The strains of probiotics can colonize together and create “floaters” or flecks of brownish material forms, much like you might see in kombucha or other fermented products. Because MaryRuth's Liquid Probiotics are wildcrafted Soil-Based Organisms (live and raw) and not lab-created, the strains can colonize; this is the beauty of nature! These strains work beautifully in symbiosis with each other, creating a high absorption, potent blend of liquid probiotics.