Bud Light is 4.2 percent alcohol as opposed to the 5 percent alcohol content of a regular Budweiser. Five percent is the standard alcohol content for commercially manufactured beers in the United States, though some contain slightly more or less.
The beer sold in the United States with the highest alcohol content is Sam Adams Triple Bock, which has an alcohol content of 17.5 percent. Several brands of beer sold within the United States contain less than the 0.5 percent that a drink contains before it is actually considered an alcoholic beverage. Although beers with alcohol contents of less than 0.5 percent may be purchased by minors throughout most of the nation, some states do place age restrictions on their consumption.