Fudged Up Carb Killa protein bar will be available from Nisa retailers from 26 August in a 60g bar, retailing at £2.59.
Each bar contains 20g of protein and 1.7g sugar and is “perfect for chocoholics looking for a healthier alternative to high-sugar confectionery”.
Grenade head of product Rob Page said: “Our Fudged Up Carb Killa Protein Bar is the perfect way to curb sugar cravings while providing a punch of protein to keep people going, ideal as a post-workout refuel, midday treat or on-the-go-snack.”