Zolpidem and Acetaminophen And Codeine: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 1, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Acetaminophen And Codeine
Zolpidem
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Both of these medicines slow down your brain and body. The codeine in your acetaminophen-codeine pain pill is an opioid, and zolpidem (Ambien) is a sleep medicine. When you take them together, their calming effects add up. That can make you very drowsy, slow your breathing, lower your blood pressure, and in serious cases it can become dangerous.
Please don't stop either one on your own. This is something your doctor or pharmacist can manage by using the lowest doses that work, keeping the time you use them together short, and watching you closely. Let them know right away if you feel unusually sleepy, confused, or short of breath.
Mechanism: Additive CNS and respiratory depression. Codeine (an opioid; note it is a prodrug activated to morphine via CYP2D6, but the concern here is pharmacodynamic, not metabolic) combined with zolpidem, a sedative-hypnotic CNS depressant, produces additive PD effects.
Effect / direction: Increased risk of hypotension, profound sedation, respiratory depression, coma, and death.
Evidence: Theoretical mechanism; opioid plus sedative combinations carry documented real-world overdose risk. Severity major, onset unspecified.
Management:
- Avoid concurrent use unless alternatives are inadequate.
- Use lowest effective dose and shortest duration; consider reducing one agent.
- Monitor for sedation and respiratory depression; consider prescribing naloxone.
What happens
An increased risk of respiratory and CNS depression
Interaction Deep Dive
Do not combine opioid-containing cough preparations with agents that depress the CNS. In patients receiving opioid analgesics together with benzodiazepines, higher rates of emergency department visits and fatal overdose have been reported2. When codeine is taken alongside CNS depressants, there is an elevated risk of hypotension, respiratory depression, profound sedation, coma, and death. Prescribing these medications together should be limited to patients whose alternative treatment options are inadequate. Keep both the doses and the length of therapy to the lowest amount necessary. Monitor patients closely for indications of sedation and respiratory depression. Where such combined use is justified, consider prescribing naloxone to allow emergency management of an opioid overdose341.
Why it happens (mechanism)
Additive CNS depression
How to manage this interaction
Keep taking both exactly as prescribed unless your care team tells you otherwise, and let them know you are using both.
- Your team may reserve this combination for when other options aren't enough, and use the lowest dose and shortest duration that works.
- They may lower the dose of the codeine product or the zolpidem, and monitor you more closely for heavy sedation and slowed breathing.
- Your prescriber may also offer naloxone as a safety backup.
Call your pharmacist or doctor right away if you feel very drowsy, confused, dizzy, or notice slowed or shallow breathing.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
4 reports — tap to read
a) In one study, the rate of emergency department visits linked to nonmedical use that occurred between 2004 and 2011 and involved opioid analgesics along with benzodiazepines rose significantly from 11 to 34.2 per 100,000. Deaths from drug overdose attributable to prescribed and higher than prescribed doses of both drug classes likewise rose significantly from 0.6 to 1.7 per 100,000, and overdose deaths attributable to benzodiazepines rose significantly from 18% to 31% 2.
b) In a prospective cohort study, the rate of overdose deaths involving the dispensing of both opioid analgesics and benzodiazepines was 10 times greater than that seen with dispensing of opioid analgesics alone (7 vs 0.7 per 10,000 person years) 2.
c) In a cohort study using data from 2004 to 2009, the risk of fatal overdose rose significantly by 2.33 fold among patients taking opioid analgesics who had a history of a benzodiazepine prescription, and rose by 3.86 fold among those with a current benzodiazepine prescription, compared with patients taking opioid analgesics who had no history of a benzodiazepine prescription. The risk of drug overdose deaths grew as the daily doses of benzodiazepines increased 2.
d) Observational studies have shown that using opioid analgesics together with benzodiazepines raises the risk of drug-related mortality compared with using opioid analgesics alone. Given their comparable pharmacological properties, it is reasonable to anticipate a similar risk when other CNS depressant drugs are used concomitantly with opioid analgesics 34.
Common questions
Can I take Zolpidem and Acetaminophen And Codeine together?
Codeine and zolpidem both depress the brain and breathing, so together they raise the risk of dangerous sedation and slowed breathing. Don't stop either drug on your own, but talk to your doctor or pharmacist so they can use the lowest doses, limit duration, and monitor you closely. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Zolpidem and Acetaminophen And Codeine interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Zolpidem and Acetaminophen And Codeine interaction managed?
Keep taking both exactly as prescribed unless your care team tells you otherwise, and let them know you are using both. Your team may reserve this combination for when other options aren't enough, and use the lowest dose and shortest duration that works. They may lower the dose of the codeine product or the zolpidem, and monitor you more closely for heavy sedation and slowed breathing. Your prescr… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Zolpidem or Acetaminophen And Codeine need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (4)
- Product Information: CARISOPRODOL, ASPIRIN, CODEINE PHOSPHATE oral tablets, carisoprodol, aspirin, codeine phosphate oral tablets. Ingenus Pharmaceuticals LLC (per DailyMed), Orlando, FL, 2021. DailyMed
- US Food and Drug Administration (FDA): Drug Safety Communications: FDA warns about serious risks and death when combining opioid pain or cough medicines with benzodiazepines; requires its strongest warning. US Food and Drug Administration (FDA). Silver Spring, MD. 2016.
- Product Information: Codeine sulfate oral solution, codeine sulfate oral solution. Hikma Pharmaceuticals USA Inc(per FDA), Berkeley Heights, NJ, 2023. DailyMed
- Product Information: Codeine sulfate oral tablets, codeine sulfate oral tablets. Hikma Pharmaceuticals USA Inc. (per FDA), Berkeley Heights, NJ, 2023. DailyMed
Keep reading about Acetaminophen And Codeine
Keep reading about Zolpidem
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