The present invention relates to the use of an inseparable combination of morphine and at least one opiate antagonist with a bioavailability of less than 5% on oral administration for producing a medicament to be administered orally for treatment of opiate dependency in humans and to the use of an inseparable combination of an opiate and at least one opiate antagonists with a bioavailability of less than 5% on oral administration for producing a medicament to be administered orally for prevention of non-oral opiate abuse in opiate addicts.
