Naloxone is a widely used drug that can reverse the effects of opioid drugs like heroin, methadone, opium, codeine, morphine and buprenorphine. It is only effective for opioid overdoses and won’t work with any other drug.
Naloxone will begin to work in 2-5 minutes, and the effects of naloxone will last between 20-40 minutes. After that time, the effects will wear off and the person may go back into overdose – medical help is crucial for the person during this time. You have to phone 999 and ask for an ambulance after giving naloxone.
Scottish Families Affected by Alcohol and Drugs provide take-home naloxone - https://www.sfad.org.uk/support-services/take-home-naloxone
Scottish Drugs Forum provide a free online course about overdose and how to administer naloxone - https://www.sdftraining.org.uk/e-learning/156-overdose-prevention-intervention-and-naloxone-3