Drug interactions
Parecoxib + Venlafaxine
Severity: Moderate
Parecoxib and Venlafaxine: moderate interaction.
Last updated
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
Parecoxib is converted to valdecoxib, a COX-2 inhibitor with less platelet effect than non-selective NSAIDs, but it still adds some gastrointestinal risk. Venlafaxine impairs platelet serotonin uptake, so bleeding risk can be increased.
What this interaction means in plain words
Parecoxib and Venlafaxine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Venlafaxine-related platelet dysfunction combined with COX-2 inhibitor effects on gastric mucosal protection.
What to do
Use the lowest effective parecoxib dose for the shortest time and consider gastroprotection in high-risk patients. Monitor for signs of gastrointestinal bleeding.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Venlafaxine
- Isocarboxazid + Venlafaxine Contraindicated
- Methylene blue + Venlafaxine Contraindicated
- Phenelzine + Venlafaxine Contraindicated
- Procarbazine + Venlafaxine Contraindicated
- Rasagiline + Venlafaxine Contraindicated
- Safinamide + Venlafaxine Contraindicated
Frequently asked questions
Can I take Parecoxib with Venlafaxine?
MediHelp rates the interaction as moderate. Parecoxib and Venlafaxine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Parecoxib is converted to valdecoxib, a COX-2 inhibitor with less platelet effect than non-selective NSAIDs, but it still adds some gastrointestinal risk. Venlafaxine impairs platelet serotonin uptake, so bleeding risk can be increased.
How serious is the interaction between Parecoxib and Venlafaxine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective parecoxib dose for the shortest time and consider gastroprotection in high-risk patients. Monitor for signs of gastrointestinal bleeding.
What other medicines interact with Venlafaxine?
MediHelp also lists interactions of Venlafaxine with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Venlafaxine page.
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