EnergySource 4:1 is an all-in-one sports drink for use both DURING and AFTER exercise. It contains 4 parts carbohydrate to 1 part whey protein isolate and key electrolytes. 4:1 is the Pro’s choice for hard training and multi-day endurance events. Use 4:1 when you anticipate a big step up in training intensity or volume, such as a training camp. The ingredients in 4:1 help sustain performance during extended exercise and help maintain hydration by enhancing the absorption of water. Whey Isolate is a high quality source of protein. Protein contributes to the maintenance and growth of muscle mass. This can result in stronger, more resilient muscle. Key Features: The Pro’s choice for hard training and multi day racing. High quality protein contributes to the maintenance and growth of muscle mass*. Carbohydrates with electrolytes for endurance performance*. Helps maintain hydration during exercise*. The carbohydrate content of 4:1 is 2:1 fructose. Light tasting and refreshing. Proven in the World’s toughest endurance events. With natural flavours. No artificial colours, preservatives or sweeteners. No lactose as an ingredient. Suitable for vegetarians. For your next big event or race download the free High5 Advanced Nutrition Guide for your sport/bodyweight/event distance from www.highfive.co.uk . This is a UK product in UK packaging. This product is sold in 1.6Kg Jars. *Effect of the ingredients