You can also take it for that extra edge towards the end of an event to increase alertness concentration and improve your endurance performance easy to open and swallow each sachet contains 23g of carbohydrate energy and a high dose of caffeine 100mg high5 isogel is a fresh tasting gel that is not thick or overly sweet unlike many other gels you dont need to drink extra water when taking the gel it has a consistency more like a sports drink when endurance racing you should always ensu