Tylenol Rapid Release Gels provide temporary relief of fever and minor aches and pains, including headache, backache, minor pain of arthritis, toothaches, pain due to the common cold, premenstrual and menstrual cramps. Each gelcap contains 500 milligrams of acetaminophen, a pain reliever. The Rapid Release gelcaps feature laser-drilled holes to facilitate fast medicine release.