Opiates are pain relieving medications. There are two types: Short acting and long acting medications. Short acting medications, as their name implies, last for relatively short time periods on the order of two to four hours and have a short onset of action. The long acting opiates include Morphine sulfate extended release, Oxycontin, methadone, Opana, Exalgo, and Duragesic. These medications have a much longer duration of action, typically from eight to twenty-four hours, and have a longer onset of action. It is common to utilize both short acting and long acting opiates in patients with severe and intractable pain. Long acting pain medications serve as the base for relief of pain. They are typically taken on a regular schedule, regardless of the patient’s pain level. Short acting pain medications are then utilized for breakthrough pain. Breakthrough pain is the pain that is experienced despite the long acting pain medication. Breakthrough pain medication is utilized on an as needed basis for pain that occurs despite the long acting pain medication.