Even though the campaign states that "men drink more on average than women" and "suffer more ill effects as a result, " it's targeted to women in an effort to play on their vanity, said a Scottish government spokeswoman who asked not to be named.

CNN: 'Drinking Mirror' app aims to show how alcohol ages you

The federal agency says the term "energy drink" isn't defined by any FDA regulation, describing it as an ill-defined marketing term with widely varying ingredients.

WSJ: Energy-Drink Makers Face New York Probe