I give as directed but a little faster (fewer days to build up) because my "children" did not seem to mind the additon sprinked over their soft food followed by mixing in some dry food to increase the volume.
My 16-year-old JRT has a little lameness due to an accident he had catching his paw in a door transition some years ago. So far, I have not noticed any change in this respect although he is livelier.
My dogs were in very good condition to begin although their coats may be a little shinier...not sure.
Bottom Line: Yes, I would recommend this to a friend
