What is a small, round, white pill that says 54 733, and the other side has a line on it?

Not medical advice: A round, white pill with imprint 54 733 & scored on other side is identified as Morphine sulfate 15 mg, a narcotic analgesic for pain.
Updated on Thursday, February 02 2012 at 02:11PM EST
Collections: morphine sulfateopioidthe other side