12x Cadbury Peanut Boost Protein Bars (12x49g) A source of protein bar with a crispy filling (45 %) and caramel (26 %) covered in milk chocolate. Cadbury have found a way to combine the delicious chocolate and chewy caramel taste of the Boost bar with 12g of protein and 32% less sugar than the original bar. Plus, at just 249 calories, this tasty bar can help fit into anyone's diet. Applying the same Boost Bar energy release will help with either pre-workout or recovery.