This white round pill is labeled W242 as Acetaminophen/Codeine 300 mg / 30 mg. W242 Pill is a combination drug that is usually prescribed to relieve mild to moderate pain. It contains two active ingredients: Acetaminophen, a pain reliever and fever reducer, and Codeine, a narcotic pain reliever. The drug is available in both pill forms. Depending on the strength prescribed, some common uses of W242 pills include osteoarthritis, headache, muscle pain, toothache, and post-surgical pain. It can also be used to reduce fever.