Safety of Combining Xanax (Alprazolam) with Acetaminophen-Codeine

Risks of Concurrent Use

The Centers for Disease Control and Prevention recommends that benzodiazepines, like Xanax, should not be used concurrently with acetaminophen-codeine due to the significant risk of respiratory depression and potentially fatal overdose from combining benzodiazepines with opioids, as both cause central nervous system depression and can decrease respiratory drive, putting patients at greater risk for potentially fatal overdose 1
Epidemiologic studies show concurrent benzodiazepine use in a large proportion of opioid-related overdose deaths, with a case-cohort study finding that concurrent benzodiazepine prescription with opioid prescription was associated with a nearly quadrupled risk for overdose death compared with opioid prescription alone 1

Codeine is a prodrug that is hepatically metabolized to morphine and other metabolites primarily through the cytochrome P450 enzyme CYP2D6, and alprazolam (Xanax) may interact with other medications through the cytochrome P450 system, potentially affecting drug metabolism 2
The combination of central nervous system depressants can potentiate the sedative effects of each drug, increasing risk of adverse outcomes 4

The Centers for Disease Control and Prevention recommends checking prescription drug monitoring programs for concurrent controlled medications prescribed by other clinicians, and considering involving pharmacists and pain specialists as part of the management team when opioids are co-prescribed with other central nervous system depressants 1
For pain management, consider non-opioid analgesics such as NSAIDs or acetaminophen alone (without codeine), and for patients requiring treatment of anxiety who are on opioids, evidence-based psychotherapies (e.g., CBT) and/or specific antidepressants or other non-benzodiazepine medications approved for anxiety should be offered instead of benzodiazepines 5

Acetaminophen-codeine is a combination product that carries risks related to both components, including hepatotoxicity from acetaminophen when used improperly or in excessive doses, and codeine's analgesic effect varies between individuals due to CYP2D6 polymorphism - some patients may be poor metabolizers with reduced analgesic effects, while rapid metabolizers may experience toxicity 5

For pain management, consider non-opioid analgesics such as NSAIDs or acetaminophen alone, and for anxiety management in patients requiring pain control with opioids, consider non-benzodiazepine anxiolytics or evidence-based psychotherapies, with close monitoring and coordination of care by specialists in pain management and psychiatry if both medications are deemed absolutely necessary 1