Purina Pro Plan Veterinary Supplements Calming Care contains a strain of beneficial bacteria shown to help dogs maintain calm behavior. The science behind Purina's therapeutic products represents a collaboration between Purina nutritionists, researchers and veterinarians. Features: -Proprietary use of probiotic strain BL999 to help dogs maintain calm behavior -Helps support dogs with anxious behaviors such as excessive vocalization, jumping, pacing, and spinning -Helps dogs cope with external stressors like separation, unfamiliar visitors, novel sounds or changes in routine and location -Helps dogs maintain positive cardiac activity during stressful events -Promotes a positive emotional state and healthy immune system in dogs -Contains a probiotic with 1X109 CFU of Bifidobacterium longum BL999 per packet to support balanced behavior Active Ingredients per sachet (1g): Bifidobacterium longum BL999 1x109 CFU Inactive Ingredients: Liver flavor, maltodextrin.