Once your cat reaches a mature age, you want to do all you can to maintain the vigor and vitality that makes cats so special. The high quality ingredients in Precise Naturals® Feline Senior Formula does just that. Senior Formula is supplemented with L-Carnitine to help maintain a healthy weight and extra fiber to help reduce hairballs. And this nutritous Precise formula is preserved naturally using mixed tocopherols. Precise Naturals does not add any synthetic preservatives.