I started adding it after reading that it is good for the intestinal tract. Vital Tabs may help some dogs. Some feel that vaccinations can cause flare ups in IBD dogs. Therefore some people do not vaccinate their IBD dogs and some decrease the vaccinations. Cody is on a three year cycle of vaccines and I will probably have his titers checked when his vaccines are next due and only vaccinate if the titers are low.
Some people use nosodes rather than vaccines.
I have no experience with nosodes and suggest you research it if interested. Some believe IBD is an auto-immune disease. The tendency to get IBD may be genetic.