28 Black AÇAÍ Nature Energy Drink 4x250mL

28 Black has released a taurine-, gluten- and lactose-free premium energy drink. Manufactured in Germany. 28 Black is a relatively healthy choice of energy drinks, offering several sugar-free options on top of having a moderate caffeine amount of 80mg. If you’re looking for a stronger energy drink, check out the article on the strongest energy drinks ranked. 28 Black Energy Drink contains 9.46 mg of caffeine per fl oz (31.98 mg per 100 ml). A 8.46 fl oz can has a total of 80 mg of caffeine.