Drug interactions
Paricalcitol + Posaconazole
Severity: Moderate
Paricalcitol and Posaconazole: 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
Posaconazole may increase paricalcitol exposure, which could lead to hypercalcemia or excessive suppression of parathyroid hormone. The effect of strong CYP3A4 inhibition is typically modest.
What this interaction means in plain words
Paricalcitol and Posaconazole 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.
Paricalcitol belongs to Musculoskeletal; Posaconazole belongs to Anti Fungals.
Why it happens
Posaconazole inhibits CYP3A4, which contributes to paricalcitol metabolism.
What to do
Monitor serum calcium, phosphate and PTH, and reduce the paricalcitol dose if hypercalcemia occurs.
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 Posaconazole
- Artemether + Posaconazole Contraindicated
- Avanafil + Posaconazole Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Conivaptan + Posaconazole Contraindicated
- Dihydroergotamine intranasal + Posaconazole Contraindicated
- Dihydroergotamine + Posaconazole Contraindicated
Other interactions of Paricalcitol
- Carbamazepine + Paricalcitol Moderate
- Cholestyramine + Paricalcitol Moderate
- Clarithromycin + Paricalcitol Moderate
- Digoxin + Paricalcitol Moderate
- Ketoconazole + Paricalcitol Moderate
- Apalutamide + Paricalcitol Minor
Frequently asked questions
Can I take Paricalcitol with Posaconazole?
MediHelp rates the interaction as moderate. Paricalcitol and Posaconazole 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. Posaconazole may increase paricalcitol exposure, which could lead to hypercalcemia or excessive suppression of parathyroid hormone. The effect of strong CYP3A4 inhibition is typically modest.
How serious is the interaction between Paricalcitol and Posaconazole?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum calcium, phosphate and PTH, and reduce the paricalcitol dose if hypercalcemia occurs.
What other medicines interact with Posaconazole?
MediHelp also lists interactions of Posaconazole with, for example, Artemether, Avanafil, Cobimetinib. The full list is on the Posaconazole page.
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