Citrus Energy Drink Mixer Drinks - A citrus flavored Energy Drink. Energy drinks are beverages which contain legal stimulants, vitamins, and minerals, including caffeine, guarana, taurine, various forms of ginseng, maltodextrin, carnitine, creatine, and ginkgo biloba. Some may contain high levels of sugar, or glucose. These drinks are typically marketed towards young people, students, people 'on the go' and those who play sports. Many such beverages are flavored and/or colored to resemble soft drinks.