Energy drink that can be taken in one swallow (or "shot"), as opposed to energy drinks that encourage users to drink an entire can, which may contain 250 calories or more. Energy drinks such as Red Bull are often used as mixers with alcoholic drinks, producing mixed drinks such as Vodka Red Bull which are similar to but stronger than rum and coke with respect to the amount of caffeine that they contain. Sometimes this is configured as a bomb shot, such as the Jägerbomb or the "F-Bomb" Fireball Cinnamon Whisky and Red Bull. Caffeinated alcoholic drinks are also sold in some
Rockstar (drink) once health concerns about the herb were publicized, the amount in the drink was significantly reduced." It also includes 1000 mg of taurine. As with all energy drinks, Rockstar can cause jitteriness, head aches, anxiety, and high blood sugar levels. If mixed with alcohol it may also mask the level of alcohol intoxication. There are no known side-effects if used in moderation. Several alcoholic versions of Rockstar are available in Canada; an alcoholic version in the US was discontinued in 2007, possibly in response to criticism that young people were confusing the alcoholic version with the regular one. Rockstar Original