Conklin Fastrack Probiotic Pack contains a unique combination of natural, live lactic acid-producing bacteria, FOS, yeast, enzymes, vitamins and specialized proteins to help ensure a healthy digestive tract. The direct-fed microbials provide a live, naturally-occurring source of microorganisms to maintain the appropriate balance of microflorain in the GI tract. Use during incidences of diarrhea, at weaning and feed changes, during and following antibiotic therapy, during periods of stress, following surgery, as part of an overall health maintenance program, and in newborns.