I have a rescue Terrier mix (best they could tell) who a Vet tech diagnosed as having a luxating (sp) patella. I noticed an improvement in his use of his right rear leg within 2 weeks. Vet has told me to keep him on it, just at a lower dosage, so I just crumble 1/3 over his food. I now purchased 4 - 75 count chew jars and his "favoring" or limping has never returned.
Bottom Line: Yes, I would recommend this to a friend