The drink, which combines the flavour of the African rooibos plant with red grapes, is being trialled in selected stores as part of Coca-Cola’s plans to broaden its portfolio in the UK.
Ípsei, which was launched in Germany and Holland last year, contains 75% of the RDA of vitamin E, B6 and niacin as well as 50% of vitamin B12 and biotin, and moves the company further into the bourgeoning adult soft drinks category.
However, the similar-sounding name has led Pepsi to consider mounting a challenge, say insiders. Michael Luckman, partner at law firm Wragge & Co, said trademark rows had erupted before over similarities in the names of rival products.
Neither Coca-Cola nor PepsiCo UK would comment.