I can vouch this product works! My Harry is 15 and suffered an ACL injury a number of years ago which the vet said needed surgery. Instead I nursed him for 6 months (carried him everywhere) and restricted his running around. Since that time he developed arthritis and could hardly move and in great pain. I too went down the vet track of medication and injections every 6 weeks but after reading others testimonials about Rose-Hip Vital Canine I thought it worth a try and I am not sorry. He has now been on it for 12 months and is a very happy and healthy 15 year old able to walk, jump and run like a dog much younger. It may not work for every dog but it sure has done wonders for mine.