What the FDA labels say about taking them together
Maribavir and valganciclovir
Maribavir's FDA label of January 27, 2026 names valganciclovir in its drug interactions section; the valganciclovir label PlainMeds reads does not name maribavir. The maribavir label: “Coadministered with Ganciclovir or Valganciclovir LIVTENCITY is not recommended to be coadministered with valganciclovir/ganciclovir (vGCV/GCV).”
Check it at the source: the maribavir FDA label on DailyMed (effective January 27, 2026, Takeda Pharmaceuticals America, Inc.); the valganciclovir FDA label on DailyMed (effective December 8, 2025, H2-Pharma, LLC).
What does the maribavir label say about valganciclovir?
Maribavir label, drug interactionsCoadministered with Ganciclovir or Valganciclovir LIVTENCITY is not recommended to be coadministered with valganciclovir/ganciclovir (vGCV/GCV).
Maribavir label, warnings and precautionsWARNINGS AND PRECAUTIONS LIVTENCITY may antagonize the antiviral activity of ganciclovir and valganciclovir.
Source: FDA drug label (Livtencity), Takeda Pharmaceuticals America, Inc., effective January 27, 2026 (SPL set c94fc2c5-e840-4f18-b7d8-d5eacb26d3a0), via openFDA; the full label on DailyMed
What does the valganciclovir label say about maribavir?
Valganciclovir's label (effective December 8, 2025) does not name maribavir in these sections. A label lists what its studies and reports found; it is not a complete list.
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
| Maribavir | Valganciclovir | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $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