Defence with Vitamin C Sometimes we can all do with a little support. Sip some good and savour this delicious blend of green tea with a hint of ginger, citrus and echinacea and added Vitamin C to support the normal function of the immune system. Twinings of London. Sourced with care. Living well should taste as good as it makes you feel. That's why we carefully select the finest ingredients to create a range of drinks that help make daily wellbeing deliciously enjoyable. No artificial colours or flavours. Naturally contains antioxidants.