Wylie's mom is correct that there is no scientific proof that supplements work for joints. Cosequin and Dasuquin are two good brands, but I love Nature's Farmacy, and I purchase all of my supplements from them. I use Phyto-Flex just as a preventative measure because I have a very athletic little girl. I am not an affiliate member of Nature's Farmacy, so I don't profit from recommending them other than to be of help to others. I love their Probiotic Max, Chelated Colloidal Silver, Cornucopia, multivitamin, and so many of their other products.
https://naturesfarmacy.com/canine/ph...hyto-flex.html https://www.chewy.com/nutramax-dasuq...ealth/dp/35838