Drug interactions
Mycophenolic acid + Valganciclovir
Severity: Major
Mycophenolic acid and Valganciclovir: major 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
Valganciclovir is converted to ganciclovir, and both drugs are myelosuppressive. Renal competition may also increase exposure to each, raising the risk of severe cytopenias.
What this interaction means in plain words
Mycophenolic acid and Valganciclovir 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.
Mycophenolic acid belongs to Miscellaneous; Valganciclovir belongs to Anti Virals.
Why it happens
Additive myelosuppression and competition for renal tubular secretion.
What to do
Monitor complete blood counts frequently, especially early in therapy, and adjust doses to renal function. Reduce or hold a drug if neutropenia or other cytopenias occur.
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?
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Other interactions of Mycophenolic acid
Other interactions of Valganciclovir
Frequently asked questions
Can I take Mycophenolic acid with Valganciclovir?
MediHelp rates the interaction as major. Mycophenolic acid and Valganciclovir 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. Valganciclovir is converted to ganciclovir, and both drugs are myelosuppressive. Renal competition may also increase exposure to each, raising the risk of severe cytopenias.
How serious is the interaction between Mycophenolic acid and Valganciclovir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor complete blood counts frequently, especially early in therapy, and adjust doses to renal function. Reduce or hold a drug if neutropenia or other cytopenias occur.
What other medicines interact with Mycophenolic acid?
MediHelp also lists interactions of Mycophenolic acid with, for example, Activated charcoal, Azathioprine, Cholestyramine. The full list is on the Mycophenolic acid page.
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