How long does opioid withdrawal last?

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For short-acting opioids, like heroin and oxycodone, opioid withdrawal symptoms generally start within 12 hours of the last opioid dose and resolve within 3-5 days. For long-acting opioids, like methadone, opioid withdrawal symptoms generally start within 30 hours of the last methadone dose and resolve within 10 days.

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