PURINA ONE Senior 7+ is specifically formulated for cats aged 7 years and over. As cats mature, maintaining their health becomes increasingly important. Special attention needs to be given to natural defences, heart and kidney functions. Purina ONE with BIFENSIS® is specially formulated with yeast, prebiotics and antioxidants, helping support natural defences and vital function for your cat's later years. Purina ONE helps your mature cat develop healthy kidneys, bones and supports their natural defences. PURINA ONE® BIFENSIS® is a unique nutritional formula with beneficial functional bacteria scientifically proven to help support your cat's natural defences from the inside out. Developed by PURINA vets and nutritionists, PURINA ONE® BIFENSIS® contains, along with the beneficial functional bacteria, all the key nutrients your cat needs, including Omega 6 fatty acids. Its dual defence formula works in parallel on the inside, by helping to support your cat's natural antibody production, and on the outside by maintaining healthy skin and coat. Available in a wide range of tasty recipes with high quality ingredients, such as chicken as the number one ingredient, PURINA ONE® BIFENSIS® helps support your cat's natural defences today and tomorrow. No added colourants, no added artificial flavours and no added artificial preservatives. With PURINA ONE® BIFENSIS®. A unique nutritional formula with beneficial functional bacteria scientifically proven to help support your cat's natural defences from the inside out. PURINA ONE Senior 7+ is nutritionally targeted to answer the specific needs of cats aged 7 years and over. - 24 vitamins and minerals to help support vital functions - Healthy kidneys thanks to vitamins E & C  - Healthy bones and good mobility promoted by minerals, vitamin D and a lean body - Contains PURINA ONE® BIFENSIS®, a unique nutritional formula with beneficial functional bacteria scientifically proven to help support your cat's natural defences from the inside out. Take the Purina ONE 3 Week Challenge and put Purina ONE to the test! The Purina ONE 3 Week Challenge has made a visible difference to so many cats. Take the challenge for yourself by feeding your cat Purina ONE for just 3 weeks and you could see a visibly healthier cat. Over 3 weeks you could see: Week 1 - Your cat's overall health and vitality could be enhanced by the high quality, complete and balanced nutrition of Purina ONE® Week 2 - You could notice the visible difference in improved digestion through your cat's firmer stools Week 3 - You could notice the visible difference Purina ONE® has made to your cat's wellbeing and appearance including a shiny coat, healthy skin and bright eyes. By the end of the challenge, the unique formula in Purina ONE is working to help support your cat's healthy immune system, helping her to stay healthy now and for years to come. Purina ONE® Visible health for today and tomorrow.