http://www.liquidhealthinc.com/about
^^^ this. My dog doesn't understand placebo effect. I have seen HUGE improvements in his mobility about a month into dosing his food. I did my research, and settled on "K9 Liquid Health" which I get delivered for amazingly less money than anything else I have found so far. If you got something better or input I'd love to have it however. I compared ingredients and this seemed to be the best I could find
Edit: I know this thread isn't about animals, but Liquid Health makes products marketed for human consumption ( however the K9 version I order can be as well.) a brief comparison to a previously posted product leads this dentist to thinks I'd gonna stick with what I have.
I called them, $30 gets me 32 oz delivered, info here
http://www.liquidhealthinc.com/about