Sis go isotonic gel pink grapefruit flavour the worlds first isotonic gel delivering energy fast 22 grams of carbohydrate per gel isotonic formulation delivers energy fast convenient gel format about sis go isotonic gels the sis go isotonic gel was the worlds first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise sis go gels are designed to be consumed without water meaning that you can ensure rapid delivery of carbohy