| Characteristic | Methadone | Diphenoxylate | Pethidine |
|---|---|---|---|
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
| - | - | - | - |
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Region
United States
Survey time period
2013 to 2023
Supplementary notes
Data before 2019 was taken from previous reports.
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