Critics: Alcohol, Caffeine a Potentially Lethal Combination

The federal government might be cracking down on caffeinated alcohol drinks like Joose, Four Loko and Liquid Charge, a combination of malt liquor, vodka and caffeine. States have already complained that the drinks -- which are popular among young adults -- are being heavily marketed to youth.

The Wall Street Journal reports that health groups worry that the stimulants in the drinks might "mask feelings of drunkenness, which could lead users to act recklessly, such as driving while intoxicated."

Connecticut Attorney General Richard Blumenthal said the federal Food and Drug Administration and the Federal Trade Commission have been "essentially inert" on the removal of the products.