This article examines the attendant obligation at law of a carrier not to refuse the carriage of radioactive cargo to be used for medical purposes. The civil aviation has proved to be the most effective medium of relief to suffering humanity. It follows that there should be no distinction in the role of civil aviation in this regard between times of collective distress and exigencies of individual distress of patients whose lives depend on the expedited transport of medicines. IFALPA observed in May 2006, that there has been an increase in recent years of the number of denials of shipments of radioactive materials by airlines, airports, pilots and States and that such denials are capable of posing problems for hospitals, patients and suppliers of radioactive pharmaceuticals.