Purina Pro Plan Veterinary Supplements sells on Amazon. I think the price is very good. Please read some of the reviews and see people thought of the product.**If you’re not sure whether to buy, add to cart, and you can come back to it later!**

Prebiotic, probiotic, postbiotics support digestive & immune health

Omega-3 fatty acids from Cod Liver Oil, Vitamin E, zinc, & biotin support skin health