When you lead a busy, active life, you cannot afford to be ill. It's therefore important that you maintain a healthy immune system that helps to provide you with a resistance to infections, including colds & flu throughout the year. Unlike ordinary Vitamin C, which can pass through your body within four hours, Redoxon All Day Defence has a long lasting action. The specialty formulated micro granules in Redoxon All Day Defence keep releasing Vitamin C into your system for up to 8 hours, helping to provide the Vitamin C which is needed to support your immune system from morning until evening. Redoxon All Day Defence is an innovative high strength formula that also contains zinc. This essential micro-ingredient works together with the Vitamin C to provide long lasting support for your immune system.