In this VETgirl online veterinary continuing education podcast, we review the use of synbiotics as a therapeutic strategy in dogs with antibiotic-associated gastrointestinal signs (AAGS). As a quick reminder, synbiotics are a combination of probiotics and prebiotics. Probiotics are defined as products that contain viable microorganisms that are used with the intention of altering the host's microflora in order to confer some sort of health benefit, whereas prebiotics are a type of ingredient that is designed to benefit the host by stimulating the growth or the activity of bacteria (Schrezenmeir).