My Italian Mastiff, Roxxy had surgery on her left knee about a year ago. Sure enough, Roxxy started limping 2 months ago and I said what am I going to do? The first surgery cost $6000.00 and there was no way I could fund another. On walks the clicking sound coming from Roxxy’s right leg made me cringe and I felt horrible, and irresponsible. I found Liquid-Vet online and ordered 2 bottles. Following the directions on the bottle, unusual for me, I noticed about half way through the bottle that the clicking noise was diminishing. I quickly re-ordered and continued her daily dosage. I love this product! Being one to not take medicine for headaches I certainly did not desire to be giving Roxxy medications every day nor any unnecessary surgery. I must add that the note included with the bottle from Jonathan Lewis is sincere. I called his cell and he actually called me back. We had a great discussion about our four-legged friends and have even exchanged their photos on Facebook. That says something, in this day of automated answering, about a company when they actually want to talk to you and not charge for it, is that customer service or what. I have and will continue to recommend this product to all. Good luck Liquid-Vet and THANKS!