My dog is 4 1/2 + years old. She has been having GI issues since she was 1 when I transitioned her from puppy chow to adult food. We had many trips to the Vet, antibiotics, sucralfate, daily famotidine and sometimes daily omeprazole, blood test, ultrasounds, nothing showed and nothing worked. Our Vet then told us of Gut Restore, basically a fecal transplant for dogs. We used Gut Restore for a full month, she still had some GI issues, however her breath was better. Since a puppy her breath always smelled fishy. After finishing the gut restore we moved to gut maintenance. I give her 2 caps daily in her food, she has not had another GI issue since. I highly recommend if your pup has chronic GI issues try Gut Restore and then Gut Maintenance, it really does work. Thank you, Animal Biome!