Sorry I'm not familiar with the products you mention. But I was wondering if you have tried Dorwest Tree Bark Powder which is excellent for digestive and malabsorption issues. My labrador has malabsorption problems in the proximal and distal intestine, as well as chronic pancreatitis, and we've seen a massive improvement since introducing the Tree Bark. The product contains 90% Slippery Elm and 10% White Poplar. Possibly worth a try.