I bought the largest box for my 85 lbs dog. From day one my dog turned his nose up to it. I had to totally blend it into the food and he was never happy about it. He usually digs into his food, but not with the Dinovite. About 3 weeks into feeding it to him I came home to poop and vomit throughout my entire house! Had to have the entire house steam cleaned and never gave it to him again. Nothing ever made him sick before Dinovite or since I stopped adding it to his food. I kept the almost full box for about a month and then threw it in the trash. Just my personal experience.
Pros and Cons:
Bottom Line: No, I would not recommend this to a friend