It may help, it may not, but it is safe for dogs
as long as there is no underlying liver problem. Ask your vet about dosage
. I've also had good results adding chondroitin and MSM. If you look in the vitamin aisle at your pet store, you'll find many arthritis supplements with these ingredients, so keep trying one until you hit on the right combination.
I know some vets will advise giving plain aspirin, but in some dogs that can prove fatal by eating through the stomach wall.