Wapiti Longevity, with Elk Velvet Antler, ginseng and traditional easter herbs, is made for the senior cat. Our formula helps maintain joint flexibility and mobility in cats and keeps them in peak condition. Longevity supports the normal function and health of the kidneys, which many cats need. It also supports a healthy immune system and normal blood cell health. Our once a day dosing in powder form is an easy and economical way to help make your cat feel better.