Intelligent energy. Energy to replenish mental alertness during the marathon of a busy day. Vuka Think is a lightly carbonated pomegranate and lychee drink focused on improving your memory and concentration. Restore your brain power with: natural caffeine, ginkgo biloba, panax ginseng, DMAE bitartrate. Other vitamins and natural energizers that will help you reach your potential include vitamins B3, B5, B6, B12 and grape seed extract. Vuka energy drinks are specifically formulated to give you the right kind of energy for the activities that fill your life. No preservatives. All natural ingredients. No high fructose corn syrup.