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
Caffeinated alcoholic drink as GRAS, there must be sufficient evidence to prove its safety; this evidence should be generally known and accepted by qualified professionals. The FDA did not approve the use of caffeine in alcoholic drinks, and thus the drinks cannot be legally marketed. As a result, the FDA sent letters to four manufacturers of caffeinated alcoholic drinks (Phusion Projects, Charge Beverages Corporation, New Century Brewing Company, and United Brands Company, Inc.) to alert them that the agency would be considering whether caffeine can lawfully be added to alcoholic drinks. These letters also gave the manufacturers fifteen days to stop the addition