Clindamycin and Daridorexant: 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
Daridorexant
No brand names on recordClindamycin
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.
Here's what's going on. Daridorexant, your sleep medicine, can slow down one of the liver enzymes (called CYP3A4) that helps your body clear certain other drugs. Clindamycin, your antibiotic, is partly broken down by that same enzyme. So when you take them together, a bit more clindamycin could build up in your body than usual, which might mean a higher chance of side effects.
The good news is this is very manageable. Please don't stop either medicine on your own. Just let your pharmacist or doctor know you're taking both, and they can watch you a little more closely or adjust things if needed.
Mechanism: Daridorexant is a weak-to-moderate CYP3A4 inhibitor. Clindamycin is a CYP3A4 substrate, so co-administration may reduce its metabolism and increase exposure (AUC/Cmax).
- Direction: increased clindamycin exposure (increases drug effect).
- Severity/Evidence: major severity on file; evidence graded probable.
- Onset: unspecified.
- Management: use daridorexant with caution; monitor for augmented clindamycin effects/adverse events (e.g., GI intolerance, diarrhea/C. difficile risk). Dose may be individualized by the care team; consider closer monitoring.
Note the database flags this as an NTI-substrate scenario; clinical relevance for clindamycin specifically may be modest, so clinical judgment applies.
What happens
Increased CYP3A4 substrate with NTI exposure
Interaction Deep Dive
Exercise caution when daridorexant is used together with a CYP3A4 substrate that has an NTI. Giving daridorexant alongside a CYP3A4 NTI substrate can raise exposure to that CYP3A4 substrate with NTI1.
Why it happens (mechanism)
Inhibition of CYP3A4-substrate metabolism by daridorexant
How to manage this interaction
Keep taking both medicines as prescribed unless your care team tells you otherwise. This combination can usually be managed safely.
- Tell your pharmacist and prescriber you take daridorexant and clindamycin together.
- Your team may monitor you more closely for increased clindamycin side effects, such as stomach upset or diarrhea.
- Your dose may need to be adjusted and individualized by your care team.
- Report any new or worsening symptoms, especially persistent or severe diarrhea, promptly.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) Taking a single 50 mg dose of daridorexant together with 2 mg of midazolam (a CYP3A4 substrate) raised the AUC of daridorexant by a geometric mean ratio (GMR) of 1.4 (90% CI, 1.3 to 1.6) and increased the Cmax by a GMR of 1.1 (90% CI, 1 to 1.3) 1.
Common questions
Can I take Clindamycin and Daridorexant together?
Taking daridorexant with clindamycin may raise clindamycin levels slightly, so watch for more side effects and let your pharmacist or doctor know you use both; they can monitor and adjust as needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Clindamycin and Daridorexant 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 Clindamycin and Daridorexant interaction managed?
Keep taking both medicines as prescribed unless your care team tells you otherwise. This combination can usually be managed safely. Tell your pharmacist and prescriber you take daridorexant and clindamycin together. Your team may monitor you more closely for increased clindamycin side effects, such as stomach upset or diarrhea. Your dose may need to be adjusted and individualized by your care team… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Clindamycin or Daridorexant 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 (1)
- Product Information: QUVIVIQ(R) oral tablets, daridorexant oral tablets. Idorsia Pharmaceuticals US Inc (per FDA), Radnor, PA, 2023. DailyMed
Keep reading about Daridorexant
Keep reading about Clindamycin
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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