It depends on hoe much methadone you have been taking and for how long. Methadone has a long half life - which means it stays in your system longer than what you may think. Say you only took 20 mg once then it would probably take about 7 days to totally get out of your system and even then it will depend what point scale drug test they are using. Sometimes methadone won't show up on certain drug tests.
- Methadone Information for Consumers
- Methadone Information for Healthcare Professionals (includes dosage details)
- Side Effects of Methadone (detailed)
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