My dog currently gets a Vitamin B Complex, digestive enzymes, fish oil, glandular support, and Turmeric. Can any of these be eliminated?

Canine Immune Complete has a b-vitamin complex, no enzymes, no fish oil, no significant glandular support (some liver for flavor, primarily), and it has an excellent source of turmeric, as well as boswellia. We expect good things for joints and inflammatory resolution.