DUKE® is a premium lifestyle Energy Drink, a stimulating non-alcoholic refreshment which also works well as a mixer with alcoholic beverages. DUKE® is 100% natural, containing no artificial colours, additives or preservatives. DUKE® comes from a tried and tested high quality recipe formulated to provide an incredible Energy boost for those who lead active and exhausting lifestyles. DUKE® ENERGY DRINK IS Available in 5 flavours: DUKE®Black, DUKE®Red, DUKE®Blue, DUKE®White, DUKE®Purple