Once your dog reaches a mature age, you want to do all you can to keep him or her healthy. Precise Naturals® Senior Formula is a nutritious, low sodium food that helps maintain ideal weight in older dogs. It has added L-Carnitine to facilitate weight management and added Taurine for promoting a healthy heart and vision. Precise Naturals is always preserved naturally using mixed tocopherols. Precise Naturals does not add any synthetic preservatives. Precise Naturals Senior Formula. Your senior pet has earned it.