PROBLEM TO BE SOLVED: To provide novel drugs for treating Parkinson's disease with little side effect in place of existing drugs employing combinations of dopaminergics.SOLUTION: A pharmaceutical dosage form comprises oxycodone or a pharmaceutically acceptable salt or like thereof as an opioid agonist, and naloxone or a pharmaceutically acceptable salt or like thereof as an opioid antagonist.SELECTED DRAWING: None
COMBINATION OF OPIOID AGONIST AND AN OPIOID ANTAGONIST IN TREATMENT OF PARKINSON'S DISEASE