| 0054-0391 | Methadone Hydrochloride | Methadone Hydrochloride | Hikma Pharmaceuticals USA Inc. | ANDA | Current |
| 0054-0391 | Methadone Hydrochloride | Methadone Hydrochloride | West-Ward Pharmaceuticals Corp. | ANDA | Current |
| 0054-0391 | Methadone Hydrochloride | Methadone Hydrochloride | West-Ward Pharmaceuticals Corp. | ANDA | Current |
| 0054-0391 | Methadone Hydrochloride | Methadone Hydrochloride | Hikma Pharmaceuticals USA | ANDA | Current |
| 0054-0391 | Methadone Hydrochloride | Methadone Hydrochloride | Hikma Pharmaceuticals USA Inc. | ANDA | Current |
| 0054-3553 | Methadone Hydrochloride | Methadone Hydrochloride | Hikma Pharmaceuticals USA Inc. | ANDA | Current |
| 0054-3553 | Methadone Hydrochloride | Methadone Hydrochloride | West-Ward Pharmaceuticals Corp. | ANDA | Current |
| 17856-3553 | Methadone Hydrochloride | Methadone Hydrochloride | ATLANTIC BIOLOGICALS CORP. | ANDA | Current |
| 70166-284 | Methadone Hydrochloride | Methadone Hydrochloride | Lohxa | ANDA | Current |
| 70166-284 | Methadone Hydrochloride | Methadone Hydrochloride | Lohxa | ANDA | Current |