I myself have not heard of any pill form with an XR or ER or any lengthened form of methadone. What i do know is that methadone in and of itself is a long acting drug. This means it naturally stays in your system longer and will have a longer duration of pain relief naturally.
- Methadone Information for Consumers
- Methadone Information for Healthcare Professionals (includes dosage details)
- Side Effects of Methadone (detailed)
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