PEBC Part I (MCQ) study materials
PEBC Part I (MCQ) study resources

A late-evening opioid prescription with multiple red flags

PEBC Part I (MCQ) · Put your knowledge to work in context.

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A late-evening opioid prescription with multiple red flags

It is 21:10 on a Friday. A 29-year-old man you have not met presents a paper prescription for hydromorphone controlled-release 6 mg, one tablet every 12 hours, quantity 60, no repeats. It is dated today, written on a walk-in clinic pad from a clinic 60 km away, and bears the prescriber's name and fax number but no prescriber licence number; the signature is a rubber stamp. He is paying cash and does not have his provincial health card with him, and he asks you to hurry because his ride is waiting. He is mildly slurred and has pinpoint pupils. You are in a province that mandates a prescription monitoring program (PMP) check before dispensing an opioid; the check shows, in the past 30 days, hydromorphone controlled-release 6 mg every 12 hours, quantity 60, from a different prescriber and filled 22 days ago at another pharmacy, plus oxycodone 5 mg, quantity 100, from a third prescriber, filled 9 days ago. A friend is standing beside him.

1. Assess whether this prescription is valid and dispenseable. Break your assessment into prescription validity, clinical red flags and legal/professional obligations.

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Prescription validity. A prescription for a controlled drug must meet provincial requirements for prescriber identification, signature and date. The absence of a prescriber licence number and the presence of a stamped rather than handwritten signature are deficiencies that typically require verification before dispensing, and in many jurisdictions render the prescription invalid until corrected. You cannot resolve that from behind the counter; it requires contact with the prescriber.

Clinical red flags, taken together:

  • New patient, cash payment, no health card, out-of-area prescriber, urgency driven by a waiting ride.
  • Sedation with pinpoint pupils, suggesting current opioid effect.
  • PMP shows overlapping opioid supplies: hydromorphone CR from one prescriber filled 22 days ago (approximately an 8-day early refill of a 30-day supply) plus oxycodone 100 tablets from a different prescriber 9 days ago.
  • Duplicate therapy with two strong opioids, presumably without a single coordinating prescriber.

No single item proves misuse; the combination shifts the prior probability substantially and makes blind dispensing indefensible.

Obligations. You have a corresponding responsibility to satisfy yourself that the prescription is authentic and therapeutically appropriate. You have a privacy obligation: you may not discuss his medications or the PMP in front of the friend without his consent. You also have an obligation not to abandon him and not to make assumptions based on appearance.

2. Set out the steps you would take next, including what you would document, before any decision to dispense or refuse.

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Do not dispense yet, and do not accuse.

  1. Verify the prescription by telephone with the prescriber's office, using the number from an independent source rather than only the number printed on the pad. Confirm authenticity, the prescriber's licence, the dose, quantity and the clinical intent.
  2. Discuss the PMP findings with the prescriber (or the on-call physician if the clinic is closed): the concurrent oxycodone, the early refill, and the sedation observed. Ask which prescriber is coordinating therapy.
  3. Address the immediate clinical risk: he is sedated. Ask about the last dose and quantity taken, assess level of consciousness and respiratory rate, and if there is any concern about respiratory depression or overdose, treat it as a medical urgency - call emergency services - rather than a dispensing problem. Offer take-home naloxone regardless of the outcome.
  4. Discuss privately with the patient: ask the friend to step away, explain what you have found, and ask him to explain. He may have a legitimate reason (a prescriber change, a lost medication, a plan being consolidated).
  5. Document contemporaneously and objectively: times, who you spoke to, what was said, the PMP data reviewed, decisions and their rationale. Record observations in neutral language ('appeared drowsy, speech slowed') rather than conclusions ('impaired').
  6. If forgery is suspected, follow the pharmacy's policy and the college's guidance - this may involve notifying the prescriber and, per local requirements, police. Refusal is permitted and often correct, but it must be documented and explained.

What you must not do is fill the prescription to avoid a confrontation, or dismiss him without any plan.

3. The patient raises his voice, says you are treating him like an addict, and demands the medication. How do you respond, and what must you offer him?

Read the worked answer

Respond calmly and without defensiveness. Lower your voice, move the conversation to a private area (both for privacy and to de-escalate), and name the process rather than the person: 'I'm not making a judgement about you. I have a legal duty to confirm every opioid prescription is authentic and that you are not at risk from two overlapping opioids. That's the same check I do for anyone.' Acknowledge his frustration explicitly - a 60 km trip and a waiting ride are real costs, and being questioned in public feels humiliating.

Be honest about limits: you cannot fill an invalid or unverified controlled-substance prescription tonight, and saying so plainly is kinder than stalling. Do not promise a time you cannot keep.

What you must offer - non-abandonment is the professional obligation:

  • A concrete plan: you will call the prescriber's office and, if closed, the on-call service, and tell him when you will have an answer.
  • Immediate assessment of his sedation and the offer of naloxone with a brief teaching on overdose recognition - this protects him whether or not the prescription is filled.
  • Information on addiction medicine or a pain clinic referral, framed as an option, not an accusation.
  • Continued service for his legitimate needs - other prescriptions, non-opioid analgesia, advice.
  • If he is acutely unwell, emergency care rather than a pharmacy dispute.

Document the conversation, including his concerns, so that the record shows a therapeutic, non-judgemental interaction rather than a refusal without explanation.