WASHINGTON (MarketWatch) -- The Food and Drug Administration will rule that caffeine is an unsafe food additive to alcoholic beverages, effectively making products such as Four Loko and Joose prohibited for sale in the United States, according to Senator Charles Schumer of New York. Additionally, the Federal Trade Commission plans to notify manufacturers that they are engaged in the potential illegal marketing of unsafe alcoholic drinks, Schumer said in a statement. Joose maker United Brands argues that the product contains less caffeine than colas and isn't aware of injury or harm associated with its products.