Four Loko is a line of alcoholic beverages sold by Phusion Projects of Chicago, Illinois, United States. Four Loko's recipe formerly included caffeine. Phusion operates as Drink Four Brewing Company. Four Loko, the company's most popular beverage, debuted in the United States market in 2005 and is available in 49 states, and in 21 countries including Ecuador, Guatemala, Paraguay, The Bahamas, Peru, Mexico, Colombia, Bolivia, Honduras, El Salvador, Nicaragua, Costa Rica, China, Canada and some countries in Europe. The name "Four" is derived from the original drink's content of four standard drinks.