how many milligrams in 1 baby aspirin
May 8, 2007 -- Baby aspirin may be the best aspirin dose for heart health, according to a new research review. A single pill of baby aspirin contains 81 milligrams of aspirin.That's about a quarter of the 325-milligram dose in an adult aspirin pill.The new research review states that in the U.S., the most commonly prescribed aspirin dose for heart health is 81 milligrams per day.The review shows that aspirin doses greater than 81 milligrams per day haven't been proven better than baby aspirin for the heart and may increase the chances of stomach bleeding.hat's about a quarter of the 325-milligram dose in an adult aspirin pill. The new research review states that in the U.S., the most commonly prescribed aspirin dose for heart health is 81 milligrams per day.