I have been using this product on my 21 year old cat for over a year. Her fur is soft, she had more energy, it increases her appetite which keeps her weight up, even her arthritic paws aren't as crooked as they used to be. She loves the flavor so much that she reminds me, twice a day, to give them to her. She paws at the bottle she loves them so much. I cannot say enough good things about this product. It has given my old cat a new vigor and lease on life! Over the holidays I ran out and within 2 weeks she was scraggly looking and lost weight. I will never go short again.