What the FDA labels say about taking them together
Mycophenolate mofetil and valganciclovir
Mycophenolate mofetil's FDA label of August 5, 2026 names valganciclovir in its drug interactions section, and valganciclovir's label names mycophenolate mofetil too. The valganciclovir label: “Based on increased risk, patients should be monitored for hematological and renal toxicity.”
Check it at the source: the mycophenolate mofetil FDA label on DailyMed (effective August 5, 2026, Genentech, Inc.); the valganciclovir FDA label on DailyMed (effective December 8, 2025, H2-Pharma, LLC).
What does the mycophenolate mofetil label say about valganciclovir?
Mycophenolate mofetil label, drug interactionsExamples; Acyclovir, ganciclovir, probenecid, valacyclovir, valganciclovir
Source: FDA drug label (CellCept), NDA050722 (Roche Palo), as published by Genentech, Inc., effective August 5, 2026 (SPL set 37241e87-4af4-4dc3-a1aa-ea6f20d8dc40), via openFDA; the full label on DailyMed
What does the valganciclovir label say about mycophenolate mofetil?
Valganciclovir label, drug interactionsName of the Concomitant Drug: Mycophenolate mofetil (MMF); Change in the Concentration of Ganciclovir or Concomitant Drug: ↔ Ganciclovir (in patients with normal renal function) ↔ MMF (in patients with normal renal function); Clinical Comment: Based on increased risk, patients should be monitored for hematological and renal toxicity.
Source: FDA drug label (Valcyte), NDA021304 (Cheplapharm), as published by H2-Pharma, LLC, effective December 8, 2025 (SPL set 4c517a39-2ded-4c5a-8d56-276853414b31), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Mycophenolate mofetil | Valganciclovir | |
|---|---|---|
| Labeled for | Organ transplant rejection | n/a |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $0.138 per capsule 250 mg capsule | $1.91 per tablet 450 mg tablet |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once