(Ontario) Filling a Methadone Prescription for a Replacement Dose

When a patient requires a replacement dose, the Replacement flag in Rx Detail can be used to indicate that the prescription is a replacement dose. A replacement dose may be required in a situation such as when the patient spills the medication.

To fill a prescription for a methadone replacement dose:

1. Create a new or refill prescription using the Methadone dynamic quantity mixture (eg. Methadone 10mg/mL Solution in Tang).
2. The QA will be the total prescribed number of milligrams of Methadone.
3. The Qty will be the number of mg of Methadone that will be provided with each dose.
4. Enter the remaining prescription information (SIG, days supply, etc.).
5. Press Methadone. The 'Methadone' window opens.
6. Select the Replacement flag.
7. The ingestion date defaults to the current date. If you need to modify the ingestion date, press the Rx button. Press the Clear Days button located beside the Ingestion Date calendar. On the Ingestion Date calendar, highlight the date the Methadone will be ingested by the patient.
8. Press the OK button. The screen returns to Rx Detail.
9. Continue to fill the narcotic prescription as usual.