We get Drs Foster&Smith and I have to say they are very good too and they do back up their products. We ordered the wrong Glucosomine for Scooby and it was our fault too so I called them yesterday and they said to send it back and they would send the right one as they have a record of the one we usually get, and not only that the girl said she will send 2 one is for free for the mistake... I explained it was my mistake and she said that is ok you are good customers and we value your continued business. I thought that was very nice of her.