This medication combines hydrocodone bitartrate, an narcotic , with paracetamol , a common fever reducer. The “5-325” signifies the dosage : 5 milligrams of hydrocodone bitartrate and 325 units of APAP. https://philipjiep529351.aboutyoublog.com/52316930/getting-to-know-hydrocodone-acetaminophen-5-325