Nasal spray (IMAGE) Norwegian University of Science and Technology Caption NTNU has been working to develop a nasal spray to reverse overdose for ten years. Friend overdose rescue is very important. The nasal spray has now been tested on 201 real overdose patients. Photo: Kai Eide / Oslo University Hospital Credit Photo: Kai Eide / Oslo University Hospital Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.