Colchicine and Daridorexant: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 2, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Daridorexant
No brand names on recordColchicine
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.
Let's talk about taking daridorexant (a sleep medicine) together with colchicine (used for gout and some other conditions). Daridorexant can slow down the body systems that normally clear colchicine out of your body. That means colchicine levels can build up higher than expected.
Colchicine is a drug where even small increases matter, so higher levels can raise the chance of side effects like stomach upset, diarrhea, nausea, or muscle aches. This doesn't mean you can't take both. The good news is your care team can manage this by adjusting your dose and watching you a bit more closely. Please check with your pharmacist or doctor before making any changes.
Effect: Daridorexant inhibits CYP3A4-mediated metabolism and P-gp-mediated efflux of colchicine, a dual CYP3A4/P-gp substrate with a narrow therapeutic index. Expect increased colchicine exposure (AUC/Cmax) and greater risk of dose-related toxicity (GI effects, myelosuppression, neuromyopathy).
- Direction: Increased colchicine effect/toxicity.
- Onset: Unspecified.
- Evidence: Probable.
- Severity: Major.
Management: Use daridorexant with caution. Colchicine dose may need to be reduced and individualized; monitor closely for toxicity, especially in renal or hepatic impairment. Consider alternatives where appropriate.
What happens
Increased CYP3A4/P-gp with NTI substrate exposure and an increased risk of CYP3A4/P-gp with NTI substrate-related adverse effects
Interaction Deep Dive
Exercise caution when giving daridorexant to patients who are also taking a substrate of both CYP3A4 and P-gp that has a narrow therapeutic index (NTI). When daridorexant is used together with agents that serve as substrates for CYP3A4 as well as P-gp and have an NTI, the plasma levels of these substrates may rise, which can lead to a greater incidence of adverse reactions related to those substrates1.
Why it happens (mechanism)
Inhibition of CYP3A4-substrate metabolism by daridorexant; inhibition of P-gp-mediated efflux transport by daridorexant
How to manage this interaction
Here is how a care team typically handles this combination:
- Keep taking both as prescribed unless your prescriber tells you otherwise. Do not stop or change doses on your own.
- Your colchicine dose may need to be adjusted and individualized by your care team because daridorexant can raise colchicine levels.
- Your team may monitor you more closely for colchicine side effects.
- Watch for and report diarrhea, nausea, vomiting, unusual muscle pain or weakness, numbness, or signs of infection.
Ask your pharmacist or doctor whether your doses should be reviewed, especially if you have kidney or liver problems.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
2 reports — tap to read
a) When a single 50 mg dose of daridorexant was given together with midazolam (a CYP3A4 substrate) 2 mg, daridorexant AUC rose by a geometric mean ratio (GMR) of 1.4 (90% CI, 1.3 to 1.6) and Cmax rose by a GMR of 1.1 (90% CI, 1 to 1.3) 1.
b) When steady state daridorexant 50 mg was administered along with dabigatran etexilate (a P-gp substrate) 75 mg, daridorexant AUC rose by a geometric mean ratio (GMR) of 1.4 (90% CI, 1.1 to 1.9) and Cmax rose by a GMR of 1.3 (90% CI, 1 to 1.7) 1.
Common questions
Can I take Colchicine and Daridorexant together?
Daridorexant can raise colchicine levels and increase its side effects, so let your care team review and possibly adjust your colchicine dose and monitor you more closely. Keep taking both as prescribed until you speak with them. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Colchicine 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 Colchicine and Daridorexant interaction managed?
Here is how a care team typically handles this combination: Keep taking both as prescribed unless your prescriber tells you otherwise. Do not stop or change doses on your own. Your colchicine dose may need to be adjusted and individualized by your care team because daridorexant can raise colchicine levels. Your team may monitor you more closely for colchicine side effects. Watch for and report dia… 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.
Questions for your pharmacist
- Does my dose of Colchicine 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 Colchicine
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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