Natural Light is an American reduced-calorie light lager brewed by Anheuser-Busch. Its ingredients are listed as water, barley malt, cereal grains, yeast, and hops. One 12-US-fluid-ounce serving contains 95 calories, 3.2 grams of carbohydrates, 0.7 grams of protein, and 4.2% alcohol by volume.