Acetaminophen And Codeine and Tianeptine: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jun 30, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Acetaminophen And Codeine
Tianeptine
No brand names on record
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.
Your pain medicine contains codeine (plus acetaminophen), and tianeptine can act on serotonin, a chemical messenger in your body. Codeine has some serotonin activity too. When two medicines both nudge serotonin upward, there is a small chance they can push it too high, a condition called serotonin syndrome.
Signs to watch for include agitation, a racing heart, sweating, shivering, muscle twitching, or feeling confused. This is considered a possible (theoretical) risk, not something that happens to everyone. The good news is your care team can manage it by watching you closely, especially when you first start or change doses. Please don't stop either medicine on your own, just talk with your pharmacist or doctor.
Effect: Additive serotonergic activity from codeine (a weak serotonin reuptake inhibitor) combined with tianeptine may increase the risk of serotonin syndrome.
- Direction/mechanism: Pharmacodynamic, additive serotonergic effect (not a CYP2D6 activation issue here, though codeine is a prodrug requiring CYP2D6 for analgesia).
- Severity/evidence: Major but theoretical; magnitude and onset unspecified.
- Management: If co-use is necessary, observe closely, especially at initiation and dose changes. Monitor for hyperthermia, autonomic instability, neuromuscular hyperactivity, and altered mental status. Discontinue codeine if serotonin syndrome is suspected.
What happens
Increased risk of serotonin syndrome
Interaction Deep Dive
Serotonin syndrome has been reported when opioids like codeine are taken together with serotonergic agents. When such combined use cannot be avoided, monitor the patient closely, especially at the start of therapy and whenever doses are changed. Should serotonin syndrome be suspected, stop the codeine123.
Why it happens (mechanism)
Additive serotonergic effects
How to manage this interaction
Your care team can manage this combination safely if it's needed.
- Keep taking both as prescribed unless your prescriber tells you otherwise.
- Your team may watch you more closely, especially when you start either drug or change a dose.
- Learn the warning signs: agitation, fast heartbeat, sweating, shivering, muscle twitching, fever, or confusion. Seek care promptly if these appear.
- Tell your pharmacist and prescriber about all serotonin-affecting medicines and supplements you take.
If serotonin syndrome is suspected, your prescriber may stop the codeine. Don't make that change on your own.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
Common questions
Can I take Acetaminophen And Codeine and Tianeptine together?
Using codeine (with acetaminophen) alongside tianeptine carries a possible, mostly theoretical risk of serotonin syndrome, so watch for symptoms like agitation, fast heartbeat, sweating, or muscle twitching and contact your care team if they occur. Keep taking both as prescribed unless your doctor says otherwise. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Acetaminophen And Codeine and Tianeptine 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 Acetaminophen And Codeine and Tianeptine interaction managed?
Your care team can manage this combination safely if it's needed. Keep taking both as prescribed unless your prescriber tells you otherwise. Your team may watch you more closely, especially when you start either drug or change a dose. Learn the warning signs: agitation, fast heartbeat, sweating, shivering, muscle twitching, fever, or confusion. Seek care promptly if these appear. Tell your pharmac… 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 Acetaminophen And Codeine or Tianeptine 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 (3)
- Product Information: Codeine sulfate oral tablets, codeine sulfate oral tablets. West-Ward Pharmaceuticals Corp (per DailyMed), Eatontown, NJ, 2016. DailyMed
- 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 Tianeptine
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist