
The biggest visual effect for my Collies has been the coat and skin quality since feeding Fish4Dogs, which my vet attributes to the Omega 3. My eldest girl also has Glucosamine/Chondroitin capsules with her food. 3 a day with 500mg being the former, and 400mg for the latter. Many combined supplements only have 100mg of the Chondroitin.
You need to give them time to build up, but my old girl is moving easier, and collapsing less on the tablets.