Coca-Cola launched its first alcoholic drink, a lemon flavoured alcopop, in Japan on Monday in an attempt to tap new markets and consumers. In a global first for the US drinks giant, three new "Lemon-Do" drinks -- containing three, five and seven per cent alcohol -- went on sale. The drinks are modelled on the country's popular "Chu-Hi" drinks, usually a mix of local spirit and a range of fruit flavours.