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Ultralow-Dose Adjunctive Methadone with Slow Titration, Considering Long Half-Life, for Outpatients with
Srini Chary1, Amane Abdul-Razzak1, Lyle Galloway1
1Division of Palliative Medicine, Department of Oncology, University of Calgary, Calgary, Alberta, Canada.
Palliative Medicine Reports
|July 5, 2021
Summary
Ultralow-dose (ULD) methadone, starting at 1mg daily, shows promise for managing refractory cancer pain. This approach improved pain, sleep, and mood in outpatients, suggesting a favorable risk profile.
Area of Science:
- Oncology
- Pain Management
- Pharmacology
Background:
- Methadone possesses unique properties beneficial for managing cancer pain.
- Utilizing very low initial doses of adjunctive methadone presents a potentially simpler strategy with a reduced risk profile.
Purpose of the Study:
- To evaluate if an ultralow-dose (ULD) methadone protocol improves pain control in outpatients with cancer-related pain.
- To assess the impact of ULD methadone on mood and sleep in this patient population.
Main Methods:
- Retrospective chart review of outpatients at a dedicated cancer pain clinic.
- Analysis of pain ratings (maximum and average) before and after methadone initiation using paired sample t-tests.
- Reporting of subjective improvements in pain, sleep, and mood, and time to initial pain improvement.
Main Results:
- 68.6% of patients reported subjective improvement in pain.
- Significant improvements were observed in sleep (78.8%) and mood (64.7%) among patients.
- Over two-thirds of patients experienced pain relief with the ULD methadone protocol.
Conclusions:
- Very low initial doses of adjunctive methadone appear effective for improving cancer pain, sleep, and mood.
- The ULD methadone protocol demonstrates a promising strategy for managing refractory cancer pain.
- Larger prospective trials are warranted to further validate these preliminary findings.
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