When I first met my little boy (Casper), he was terribly ill. He had severe bloody diarrhea and was constantly vomiting and was in a lot of pain. I fell in love with him the moment I held him and he became my baby and I couldn't stand to see him in so much pain. The vets couldn't figure out what was wrong with him. He was first diagnosed with Giardia...A few days later they told me it was toxidia. No matter which meds they gave him, nothing was helping and he was only getting weaker and sicker and it broke my heart. Eventually he started refusing to eat even when I knew he was starving and it seemed as if he was lying down 24/7. Thankfully, they started him on different meds which seemed to be working. A technician at the vet told me about this supplement so I decided to try it. Within a week of taking his new meds mixed with this, he was not only feeling better but running around, playing and nipping at everything he could get his paws on...Excelling as a perfectly happy puppy. I continued giving this brand of supplement to both my pups and they are amazingly beautiful, energetic, healthy and strong and haven't had any health problems, minor or major, whatsoever since. With high quality ingredients like flaxseed and beef liver and added vitamins like B12, it is not surprising. Missing Link is a powerful immunity boost and thorough preventative. I highly recommend this product to anyone who wants to provide their pups with added nutrition and a continuous clean bill of health.