Redoxon triple action is a combination of high strength vitamin c, d and zinc to help keep your immune system – your body’s natural protector – on top form. when you have a busy lifestyle and you need to be at your best, some occasional support is always helpful. vitamin c vitamin c is an essential nutrient that, among other things, helps to support our immune system. our bodies cannot make vitamin c and we must therefore get it from our diet by eating foods which are rich in vitamin c like fresh fruit and vegetables. sometimes it can be good to get a little extra vitamin c, which is where redoxon can help. vitamin d vitamin d is primarily formed through the action of uv sunlight on the skin and helps to support the immune system. getting your daily dose of sunlight is not always possible. the convenient effervescent tablets quickly dissolve in water. adults and children over 12 years old. dissolve 1 tablet per day in a glass of water.