My 9 year old (? I think rescue) German Shepherd/Border Collie X seems to be more comfortable and has even done a bit of running around with a ball without limping!!!! I wanted him to be able to continue playing with our younger border collie without the arthritis pain in his front shoulder and it seems to have worked, I would recommend this product. He usually tries to join in and run but then stops with his paw in the air, waiting for me to go and give it a rub and a massage. This paw in the air habit has gone since starting these tablets, one in the morning and one in the evening, with the choice of increasing to 3 a day.