What the FDA labels say about taking them together
Ganciclovir and probenecid
Ganciclovir's FDA label of January 9, 2026 names probenecid in its drug interactions section; the probenecid label PlainMeds reads does not name ganciclovir. The ganciclovir label: “Ganciclovir for Injection dose may need to be reduced. Monitor for evidence of ganciclovir toxicity.”
Check it at the source: the ganciclovir FDA label on DailyMed (effective January 9, 2026, Fresenius Kabi USA, LLC); the probenecid FDA label on DailyMed (effective January 5, 2021, Lannett Company, Inc.).
What does the ganciclovir label say about probenecid?
Ganciclovir label, drug interactionsName of the Concomitant Drug: Probenecid; Change in the Concentration of Ganciclovir or Concomitant Drug: ↑Ganciclovir; Clinical Comment: Ganciclovir for Injection dose may need to be reduced. Monitor for evidence of ganciclovir toxicity.
Source: FDA drug label (Ganciclovir), Fresenius Kabi USA, LLC, effective January 9, 2026 (SPL set 35addab5-09db-4f8a-9c69-6fbce33ecc37), via openFDA; the full label on DailyMed
What does the probenecid label say about ganciclovir?
Probenecid's label (effective January 5, 2021) does not name ganciclovir in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Probenecid), Lannett Company, Inc., effective January 5, 2021 (SPL set ab497fd8-00c3-4364-b003-b39d21fbdf38), 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
| Ganciclovir | Probenecid | |
|---|---|---|
| Labeled for | n/a | Gout |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $91.24 per gram 0.15% ophthalmic gel | $0.636 per tablet 500 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