What the FDA labels say about taking them together
Talazoparib and verapamil
Talazoparib's FDA label of April 10, 2026 names verapamil in its drug interactions section; the verapamil labels PlainMeds reads (4) do not name talazoparib. The talazoparib label: “Drugs on TALZENNA Effect of P-gp Inhibitors Breast Cancer Avoid coadministration of TALZENNA with the following P-gp inhibitors: itraconazole, amiodarone, carvedilol, clarithromycin, itraconazole, and verapamil.”
Check it at the source: the talazoparib FDA label on DailyMed (effective April 10, 2026, Pfizer Laboratories Div Pfizer Inc); the verapamil FDA label on DailyMed (effective April 6, 2026, Zydus Pharmaceuticals (USA) Inc.).
What does the talazoparib label say about verapamil?
Talazoparib label, drug interactionsDrugs on TALZENNA Effect of P-gp Inhibitors Breast Cancer Avoid coadministration of TALZENNA with the following P-gp inhibitors: itraconazole, amiodarone, carvedilol, clarithromycin, itraconazole, and verapamil.
Source: FDA drug label (Talzenna), Pfizer Laboratories Div Pfizer Inc, effective April 10, 2026 (SPL set c6fd147f-a77e-4a0b-9280-e82ecc41b4be), via openFDA; the full label on DailyMed
What does the verapamil label say about talazoparib?
Verapamil's label (effective April 6, 2026) and its 3 other brand-application labels do not name talazoparib in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Verapamil hydrochloride), Zydus Pharmaceuticals (USA) Inc., effective April 6, 2026 (SPL set e19ab8d8-dae5-489d-9805-7e7407bea06d), 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
| Talazoparib | Verapamil | |
|---|---|---|
| Labeled for | Breast cancer, Prostate cancer | High blood pressure, Atrial fibrillation, Angina |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | n/a | $0.191 per tablet 180 mg tablet |
| Shortage now | No current entry | A presentation being discontinued |
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