FIRE NUTRITION Amylopectin is a fast-absorbing carbohydrate that provides an immediate source of energy. Ideal for athletes and sports enthusiasts, this amylopectin powder mixes easily with water and is perfect as a pre-workout supplement to boost your energy levels and performance. Composition Amylopectin. Instructions for use Mix 60g with water before exercise. Pharmaceutical advice Get an instant energy boost with amylopectin.