#$%^&*AU2014201782A120140417.pdf#####ABSTRACT An analgesic composition, in parenteral unit dosage form or in a unit dosage form suitable for delivery via the dermis or mucosa, comprises buprenorphine and an amount of naltrexone such that the ratio by 5 weight of buprenorphine to naltrexone delivered to or reaching the plasma of a patient is in the range 100:1 to 5000:1. The analgesic action of the buprenorphine is potentiated by the low dose of naltrexone. Also provided are a method of treatment of pain and the use of buprenorphine and naltrexone for the manufacture of a medicament.
