Pet Naturals of Vermont - Daily Probiotic for Cats, Digestive Supplement, 30 Bite-Sized Chews Probiotics are recommended for immune support, increased times of stress such as boarding, travel and new changes to the environment as well as when a pet has been placed on antibiotics. Our Daily Probiotic does not contain wheat, corn or artificial ingredients. It comes in a tasty duck flavored chew that even finicky cats will love. Daily Probiotic guarantees 100 million CFUs to the gut and supports digestive regularity in cats of all ages. Probiotics help normalize digestive functions to reduce gassiness, diarrhea, constipation and blockages. All Pet Naturals products are veterinarian formulated, NASC approved and manufactured in the USA.