I think my dogs are so healthy because they have been taking NuVet plus since they were little puppies. Now they are 11 years old. I really like that that it is a natural product. I also started giving the bigger dog the NuVet joint pills when he started having trouble with his joints, I could tell it helped him immensely. I also use their shampoo and ear stuff. I have given bottles of NuVet away to my friends to try and get them to start ordering for their own pets. I just can't recommend them enough.