What the FDA labels say about taking them together
Doxorubicin and trandolapril/verapamil
Trandolapril/verapamil's FDA label of January 29, 2026 names doxorubicin in its drug interactions section; the doxorubicin labels PlainMeds reads (2) do not name trandolapril/verapamil. The trandolapril/verapamil label: “Concentrations of doxorubicin may be increased by the administration of verapamil.”
Check it at the source: the doxorubicin FDA label on DailyMed (effective May 5, 2026, Pfizer Laboratories Div Pfizer Inc); the trandolapril/verapamil FDA label on DailyMed (effective January 29, 2026, Glenmark Pharmaceuticals Inc., USA).
What does the doxorubicin label say about trandolapril/verapamil?
Doxorubicin's label (effective May 5, 2026) and its 1 other brand-application label do not name trandolapril/verapamil in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Doxorubicin Hydrochloride), Pfizer Laboratories Div Pfizer Inc, effective May 5, 2026 (SPL set 1fd148fb-0fbc-4b6f-b790-23546fb46a71), via openFDA; the full label on DailyMed
What does the trandolapril/verapamil label say about doxorubicin?
Trandolapril/verapamil label, drug interactionsConcentrations of doxorubicin may be increased by the administration of verapamil.
Source: FDA drug label (Trandolapril and Verapamil Hydrochloride), Glenmark Pharmaceuticals Inc., USA, effective January 29, 2026 (SPL set 39bad727-af4c-4d20-933b-7f287e88099a), 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
| Doxorubicin | Trandolapril/verapamil | |
|---|---|---|
| Labeled for | Leukemia, lymphoma and myeloma, Breast cancer | High blood pressure |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | n/a | n/a |
| 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