What the FDA labels say about taking them together
Dabrafenib and warfarin
Dabrafenib's FDA label of May 20, 2026 names warfarin in its drug interactions section; the warfarin label PlainMeds reads does not name dabrafenib. The dabrafenib label: “Monitor international normalized ratio (INR) levels more frequently in patients receiving warfarin during initiation or discontinuation of dabrafenib.”
Check it at the source: the dabrafenib FDA label on DailyMed (effective May 20, 2026, Novartis Pharmaceuticals Corporation); the warfarin FDA label on DailyMed (effective May 29, 2026, Amneal Pharmaceuticals LLC).
What does the dabrafenib label say about warfarin?
Dabrafenib label, drug interactionsMonitor international normalized ratio (INR) levels more frequently in patients receiving warfarin during initiation or discontinuation of dabrafenib.
Source: FDA drug label (Tafinlar), Novartis Pharmaceuticals Corporation, effective May 20, 2026 (SPL set fee1e6b1-e1a5-4254-9f2e-a70e0f8dbdea), via openFDA; the full label on DailyMed
What does the warfarin label say about dabrafenib?
Warfarin's label (effective May 29, 2026) does not name dabrafenib in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Warfarin Sodium), Amneal Pharmaceuticals LLC, effective May 29, 2026 (SPL set 558b7a0d-5490-4c1b-802e-3ab3f1efe760), 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
| Dabrafenib | Warfarin | |
|---|---|---|
| Labeled for | Lung cancer | Blood clots (DVT and PE), Atrial fibrillation |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $0.093 per tablet 2 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