But this could all be about to change with the launch today of Boost Guarana, a new chocolate countline bar from Cadbury Schweppes, which the company claims is the first mainstream chocolate bar sold in the UK with proven energy stimulation properties. The energy food market in the UK is estimated to be worth around £750 million (€1.2bn), according to Cadbury, and while the vast majority of this value comes from energy drinks, the company clearly believes that there is significant potential for an energy bar with a recognised brand name for 'normal' consumers. The company claims that in tests carried out by Reading Scientific Services in the UK, its Boost Guarana line was found to be the most effective countline bar when it came to boosting mental energy, improving attention and concentration and maintaining accuracy. It also claims that the bar could match, and in some cases surpass, the energy boost given by some energy drinks.