Yes it does-! Look at the milligrams when you look at the labels. You want at least 500 mgs.. After it doesnt work anymore, start glycoflex IMO as it has all 3 bone supplements. Its mainly made for dogs that had bone surgery, so its pretty advanced.
Petsmart sells a good one. First check with the vet there isnt anything wrong other wise- but yes- it works as well for them as it does for people.