With a clever blend of carbohydrate sources, your muscles will appreciate an instant energy boost from the fructose and a more steady stream of energy from the maltodextrin. Keep this gel pack, with its juicy blackberry flavour and 40mg of caffeine, handy for a quick performance hit without the crazy sugar crash. Talk Nerdy To Me The carbohydrates in this 100 calorie packet use non-competing pathways to help maximise carbohydrate absorption without adding stress to the stomach. This handy gel pack also contains sodium, the primary electrolyte lost in sweat, to aid hydration alongside branched-chain amino acids which can reduce mental fatigue and decrease muscle damage.