Maribavir and Colchicine: 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
Maribavir
Colchicine
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.
These two medicines don't mix well. Maribavir (Livtencity) can block the pathways your body uses to clear colchicine out. When that happens, colchicine can build up to dangerous levels, and too much colchicine can cause serious, even life-threatening harm (think severe stomach upset, muscle weakness, and problems with blood cells).
Because of this risk, this combination is usually not recommended together, and it's especially risky if your kidneys or liver aren't working well. Please don't stop or change either medicine on your own. Reach out to your pharmacist or doctor so they can review your regimen and choose the safest plan for you.
Effect: Maribavir inhibits both P-gp and CYP3A4, reducing colchicine efflux and metabolism, which increases colchicine exposure (AUC/Cmax) and raises the risk of serious or fatal toxicity.
- Direction: increased colchicine effect/toxicity (neither drug is a prodrug here).
- Severity/evidence: contraindicated; probable substantiation.
- Management: Coadministration is contraindicated in patients with renal or hepatic impairment. If use in patients with normal organ function is unavoidable, colchicine daily dose should be reduced by 50% to 75% or dose frequency reduced, individualized by the care team, with close monitoring for GI, neuromuscular, and hematologic toxicity.
What happens
Increased colchicine exposure and an increased risk of fatal toxicity
Interaction Deep Dive
Taking colchicine together with P-gp inhibitors is contraindicated1. When colchicine is combined with inhibitors that act on both CYP3A4 and P-gp, there is a risk of serious, potentially fatal toxicity. Should it be necessary to give colchicine alongside a P-gp inhibitor, the colchicine dose must be modified, either by cutting the daily amount by 50% to 75% 3 or by administering it less frequently. Furthermore, using colchicine at the same time as P-gp and CYP3A4 inhibitors is contraindicated in individuals with impaired renal or hepatic function 3. In patients affected by renal and hepatic impairment, pairing these inhibitors with colchicine has led to life-threatening or fatal colchicine toxicity 2.
Why it happens (mechanism)
Inhibition of P-gp-mediated efflux transport of colchicine; inhibition of CYP3A4-mediated metabolism of colchicine
How to manage this interaction
Keep taking both exactly as prescribed until you speak with your care team. This is a high-risk pairing, so it needs professional review.
- Your team may avoid combining these, especially if you have kidney or liver problems, where the combination can be dangerous.
- If both are truly needed, your colchicine dose may need to be lowered or given less often, and this will be individualized by your care team.
- They may also monitor you more closely for signs of colchicine toxicity, such as ongoing diarrhea or vomiting, muscle pain or weakness, tingling, or unusual bruising or infections.
Call your pharmacist or prescriber before making any changes, and report these symptoms right away.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Maribavir and Colchicine together?
Maribavir can push colchicine to toxic levels, so this combination is generally contraindicated and should be reviewed by your care team, especially if you have kidney or liver problems. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Maribavir and Colchicine interaction?
It is rated contraindicated. These should generally not be used together.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Maribavir and Colchicine interaction managed?
Keep taking both exactly as prescribed until you speak with your care team. This is a high-risk pairing, so it needs professional review. Your team may avoid combining these, especially if you have kidney or liver problems, where the combination can be dangerous. If both are truly needed, your colchicine dose may need to be lowered or given less often, and this will be individualized by your care… 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 Maribavir or Colchicine 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: LODOCO(R) oral tablets, colchicine oral tablets. AGEPHA Pharma USA, LLC (per FDA), Parsippany, NJ, 2023. DailyMed
- Product Information: MITIGARE(R) oral capsules, colchicine oral capsules. Hikma Specialty USA Inc (per FDA), Columbus, OH, 2024. DailyMed
- Hansten PD, Tan MS, Horn JR, et al: Colchicine drug interaction errors and misunderstandings: recommendations for improved evidence-based management. Drug Saf 2023; 46(3):223-242. PubMed
Keep reading about Maribavir
Keep reading about Colchicine
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major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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