Bloom Energy Drink contains 180 milligrams of caffeine per 12-ounce can. This caffeine is natural and derived from green coffee bean extract. In addition to caffeine, the drink includes other ingredients such as green tea extract, lychee fruit extract, L-theanine, ginseng, and apple cider vinegar, with zero sugar and only 10 calories per can. The caffeine content is relatively high compared with many other popular energy drinks. This information applies uniformly across all four flavors of Bloom Energy Drinks: peach mango, strawberry watermelon, raspberry lemon, and cherry lime.