My 20 yr old cat has IBD and suspected lymphoma. He also has Stage II CKD, hyperthyroidism, hypertension, allergies, asthma requiring an inhaler, and psychogenic alopecia. He has to be on antibiotics on a rotationa 7/7 schedule to control the IBD. We have not done chlorambucil yet because of his age, but he is a strong kitty and not giving up at all. I decide on the 7 days off to try AnimalBiome in addition to his Proviable DC probiotic and he actually made it 20 days until needing the antibiotic again. He gets bacterial backflow into the pancreas and urinary tract with repeated infections without the antibiotics. While AnimalBiome wasn't a "fix" for him, I wish I'd known about it years ago. It might have delayed where we are now. That said, he has never gone 20 days without symptoms on any medication so this stuff does work. I am still using it on the "off days" and deciding when to go back on the meds when I see the familiar return of symptoms.
For animals that need more support than a probiotic, or have intestinal damage from parasites (like my cat, who was 15 years old outside as a TNR feral infested with whipworms and other stuff before I trapped him and brought him in) this is really worth the price.
Picture of Squeaky, untamed and unmanageable just years ago, and now able to take a pill with minimal fuss because he knows I'm trying to help.