At the centre of the formula is Cyclic Cluster Dextrin (CCD), a highly digestible carbohydrate source chosen for its fast absorption and low GI stress. Combined with sucrose in a carefully balanced ratio, EFS-PRO supports efficient carbohydrate delivery while helping reduce the stomach discomfort and flavour fatigue that often come with long-duration fuelling. The formula is engineered to keep energy levels stable, preserve glycogen stores, and support sustained performance deep into training or racing.

EFS-PRO also delivers a clinically effective blend of electrolytes including sodium, potassium, chloride, calcium, and magnesium to support hydration and help prevent cramping in hot or high-intensity conditions. Unlike many traditional sports drinks, it is formulated to remain isotonic even at higher concentrations, helping fluids and carbohydrates absorb quickly when your body needs them most.

Naturally flavoured and free from artificial sweeteners, colours, and stevia, EFS-PRO has been designed with long-term usability in mind. The light, refreshing taste makes it easier to stay consistent with your fuelling plan over several hours, while the minimalist ingredient profile focuses only on what supports endurance performance.

EFS-PRO works by combining multiple carbohydrate sources with advanced electrolyte support to maximise fuel delivery while remaining gentle on digestion. The formula uses Cyclic Cluster Dextrin as its primary carbohydrate source, which has a high molecular weight and low osmolality. This allows it to empty from the stomach quickly and absorb efficiently without causing bloating or heaviness, even at high carbohydrate concentrations.

Alongside CCD, EFS-PRO includes sucrose to support multiple carbohydrate transport pathways, helping the body absorb and utilise more fuel per hour. This dual-carb approach increases carbohydrate availability for ATP production while maintaining stable blood glucose levels and supporting glycogen preservation. Added electrolytes such as sodium, potassium, magnesium, calcium, and chloride help maintain fluid balance, muscle function, and hydration throughout prolonged exercise.