From your email I am assuming your dog damaged it's cruciate ligament. If that is the case be aware of the statistics that 80% of the dogs that rupture an anterior cruciate ligament will rupture the other side sometime later. So I advise owners to do things differently to try to avoid damage from occurring to the other side. I would give probiotics, ARTHRO-IONX, MSM, and Omega 3,6,9 daily to help strengthen the connective tissue and reduce inflammation. In addition some Ligaplex 1 from Standard Process would be helpful. ARTHRO-IONX helps the body better utilize the other supplements for a synergistic effect. ARTHRO-IONX also helps to reduce pain and helps stimulate repair. I hope you will be able to make your dog comfortable soon. I also advise a veterinary chiropractic consultation to make sure alignment is good and not contributing to more stress on the knees. Please let us know how you do and if you have any other questions.