“Both my pitties have torn ligaments and arthritis, 80 lbs each.. They are allergic to just about everything but no adverse effects from Previcox. One a day after dinner time. Protects the stomach and the pill goes to work as they sleep for the next 10 hours. They are as strong as ever, though it's now low impact swimming and playing instead. I also ice the knees during the day. The limp comes back if taken off it.”