PTCB Certified Pharmacy Technician (PTCE)Patient Safety and Quality AssuranceMedium
A pharmacy technician receives a prescription for 'Ambien CR 12.5 mg at bedtime' for an elderly patient. The technician notices that the patient's profile indicates they are also taking 'Xanax 0.5 mg three times daily'. What is the MOST appropriate next action for the technician?
- AProcess the prescription as written, as both are valid prescriptions.
- BContact the prescriber immediately to clarify the Ambien CR prescription.
- CAlert the pharmacist about a potential drug-drug interaction or additive CNS depression.
- DDispense the Ambien CR but counsel the patient to take it at a different time than Xanax.
Show answer & explanationAnswer & explanation
Correct answer: C. Alert the pharmacist about a potential drug-drug interaction or additive CNS depression.
Both Ambien CR (zolpidem) and Xanax (alprazolam) are central nervous system (CNS) depressants. Combining them, especially in an elderly patient, significantly increases the risk of additive sedation, dizziness, and respiratory depression. The technician should alert the pharmacist to assess this potentially dangerous interaction.
Why the other options are wrong
- A. Processing without addressing the interaction is unsafe.
- B. While clarification might be needed, the immediate next step for a technician is to escalate the concern to a pharmacist, who has the clinical authority to contact the prescriber.
- D. Dispensing already assumes the interaction is manageable by timing, which is a clinical decision beyond the technician's scope and may not fully mitigate the risk.
Drug-Drug Interaction: CNS Depressants
Combining two or more CNS depressants (e.g., benzodiazepines, hypnotics, opioids) can lead to additive effects like excessive sedation, respiratory depression, and impaired coordination, especially in vulnerable populations.
- Increases risk of falls, accidents, and respiratory arrest.
- Common with benzodiazepines, opioids, Z-drugs.
- Requires careful monitoring and prescriber awareness.
Memory trick: Two downers together? Alert the pharmacist, don't be a loafer!