I have a 7 year old Cocker Spaniel with Hip displacer and arthritis loves running in open countryside this is his life. Lately he had become grumpy, stiff and unsettled at night with obvious pain, unable to easily get up stairs to our bed which he loves. Vet suggested pain killers on going, but this was just going to mask the pain I wanted something to help him so I tried the Serquin chewable tablets and the results were amazing, he is now a happy dog, no longer grumpy trying to find a comfortable place at night, he is right back to his happy self a spring chicken, been on them 2 months now results were very quick. Thank you highly recommend them.