This document discusses morphine, a strong opioid pain reliever named after Morpheus, the Greek god of dreams. It provides a brief history of morphine from ancient times to its isolation in the early 19th century and restrictions in the 20th century due to addiction. The document outlines morphine's medical uses in relieving pain and its side effects like constipation and respiratory depression. It also notes the risk of physical or mental addiction to morphine and that it can be administered orally, intravenously, intramuscularly or subcutaneously.