Related Experiment Video
Updated: May 10, 2026

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
Published on: July 29, 2014
Categorising methadone: Addiction and analgesia.
1School of Sociology, Research School of Social Sciences, Australian National University, Canberra ACT 0200, Australia.
Methadone is used for both pain relief and opioid addiction treatment, but medical language often separates these uses. This separation becomes difficult when patients require methadone for both conditions simultaneously.
Area of Science:
- Pharmacology
- Medical Sociology
- Pain Management
Background:
- Methadone was initially developed as an analgesic but is now primarily recognized for opioid addiction treatment through methadone maintenance therapy (MMT).
- The 1990s saw a resurgence of methadone as a painkiller due to the liberalization of opiate prescriptions for chronic pain.
- Current medical literature and guidelines often present methadone as two distinct entities based on its application: pain management versus addiction treatment.
Purpose of the Study:
- To examine the relationship between methadone as a painkiller and methadone as an addiction treatment.
- To analyze how medical discourse constructs and maintains distinctions between these two uses of methadone.
- To investigate the complexities and challenges in separating these roles, particularly in patients with co-occurring chronic pain and opioid dependence.
Main Methods:
- Literature review of recent medical research on methadone.
- Analysis of treatment guidelines concerning methadone use.
- Examination of medical discourse and patient categorization (addicts vs. non-addicts, pain sufferers vs. non-pain sufferers).
Main Results:
- Medical discourse often creates a separation between methadone for pain and methadone for addiction, classifying patients accordingly.
- Despite efforts to distinguish these uses, the pharmacological actions and clinical applications of methadone show significant overlap.
- The distinction between 'two methadones' is most challenged in cases where methadone maintenance therapy patients also require treatment for chronic pain.
Conclusions:
- The categorization of patients and the discourse surrounding methadone use complicate the separation of its analgesic and addiction treatment roles.
- The inherent similarities in methadone's action and application across different contexts challenge rigid distinctions.
- Clinical practice, especially in managing chronic pain among patients in methadone maintenance therapy, highlights the difficulties in maintaining a clear separation between the 'two methadones'.
Related Concept Videos
Opioid Analgesics: Synthetic and Semisynthetic Opioids
Analgesia and Pain Management
Drug Abuse and Addiction: Pharmacological Phenomena
Opioid Analgesics: Morphine and Other Natural Cogeners
Drug Dependence
Opioid Receptors: Overview

