I have been using Liquid-Vet for just over 4 months. I have to say that since I started using it my 14yr old cat has been a lot more active and spry. Her joints creak a whole lot less and she isn’t as sensitive on her hind quarters. She had all but stopped playing with her cat nip toys and pretty much just stayed close to the bed and slept. Now I find her all over the house and playing outside, weather permitting, and she has taken up chasing paper balls around again! Thank you so much for your product. I love my kitty like family and finally I have a way to ease some of the pain from getting older that we all experience.