EnerGex is ideal for use before, during and following exercise to support energy delivery. EnerGex is a safer source of carbohydrate (energy) compared with simple sugars. It is low-glycaemic meaning it leads to a slower rate of glucose entry into the blood, avoiding high peaks and sudden drops in blood glucose levels, and therefore insulin levels as well. This leads to a more balanced and prolonged energy supply. Approx. 1 month supply.