Anheuser-Busch says the claims that it waters down its beer are completely false.
A class action lawsuit filed in California accuses the maker of Budweiser of short-changing people on alcohol content to increase profits.
The suit seeks unspecified damages, but says the controversy is worth more than 5 million dollars.
Similar lawsuits were filed in several other states as well.
The company says its beers fully comply with all alcohol labeling laws.