Energy Gel Caffeine is smooth with a light consistency. It's not as thick or sweet as other gels on the market so it's easy to get down and with natural fruit juice, it tastes great too. Easy to open and swallow, each sachet delivers 23g of carbohydrate energy and 30mg caffeine. An energy gel is a convenient instant energy boost during exercise. You simply open the top and take it straight from the sachet.