A powerful prescription pain medication, Hydrocodone 10-325 mg with imprint m523 white oval pill, is the most recommended by professional healthcare for those 18 years or older. Hydrocodone 10/325 is well-known for its effectiveness in treating moderate to severe pain. It is classified as a Schedule II controlled substance, contains 10 mg of hydrocodone, a powerful opioid analgesic, and is combined with 325 mg of acetaminophen, a non-opioid pain reliever.