Triple Action GI Relief for Cats. GMP is designed to stop occasional diarrhea flare-ups and other symptoms. Contains probiotics and other powerful ingredients that control inflammation and promote balance in the microbiome, especially when it is disrupted by antibiotics or harmful microbes. 60 small capsules per bottle. The prebiotic in the KittyBiome Gut Maintenance Plus formula has recently changed from FOS to MOS. Recent evidence suggests that MOS may be a gentler option for some cats. If you would like to purchase the previous formulation with FOS, please order the DoggyBiome GMP for Dogs (Small) here.