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Drug interactions

Celecoxib + Elvitegravir / cobicistat / emtricitabine / tenofovir df

Severity: Major

Celecoxib and Elvitegravir / cobicistat / emtricitabine / tenofovir df: major interaction.

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For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Tenofovir is renally eliminated and associated with nephrotoxicity, and NSAIDs can reduce renal perfusion, increasing the risk of acute kidney injury. Cobicistat also raises serum creatinine by inhibiting tubular secretion, which complicates monitoring. Celecoxib exposure could be affected by CYP2C9 modulation, though this is of uncertain significance.

What this interaction means in plain words

Celecoxib and Elvitegravir / cobicistat / emtricitabine / tenofovir df can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.

Evidence level: Moderate

Why it happens

Additive nephrotoxic risk from NSAID prostaglandin inhibition and tenofovir tubular toxicity, with competition for renal elimination.

What to do

Avoid chronic or high-dose NSAID use with tenofovir-containing regimens and use paracetamol where possible. If needed, monitor serum creatinine, phosphate and urinary protein regularly.

What to ask your pharmacist

  • Does the benefit of taking both outweigh the risk in my case?
  • Do I need any blood test, ECG or other check while on both?
  • What early warning signs should I watch for, and what should I do if they appear?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Celecoxib with Elvitegravir / cobicistat / emtricitabine / tenofovir df?

MediHelp rates the interaction as major. Celecoxib and Elvitegravir / cobicistat / emtricitabine / tenofovir df can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Tenofovir is renally eliminated and associated with nephrotoxicity, and NSAIDs can reduce renal perfusion, increasing the risk of acute kidney injury. Cobicistat also raises serum creatinine by inhibiting tubular secretion, which complicates monitoring. Celecoxib exposure could be affected by CYP2C9 modulation, though this is of uncertain significance.

How serious is the interaction between Celecoxib and Elvitegravir / cobicistat / emtricitabine / tenofovir df?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid chronic or high-dose NSAID use with tenofovir-containing regimens and use paracetamol where possible. If needed, monitor serum creatinine, phosphate and urinary protein regularly.

What other medicines interact with Celecoxib?

MediHelp also lists interactions of Celecoxib with, for example, Ketorolac, Ketorolac intranasal, Aceclofenac. The full list is on the Celecoxib page.

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