What the FDA labels say about taking them together
Dronabinol and warfarin
Dronabinol's FDA label of May 6, 2026 names warfarin in its drug interactions section; the warfarin label PlainMeds reads does not name dronabinol. The dronabinol label: “Potential for displacement of other drugs from plasma proteins; monitor for adverse reactions to concomitant narrow therapeutic index drugs when initiating or increasing the dosage of SYNDROS.”
Check it at the source: the dronabinol FDA label on DailyMed (effective May 6, 2026, Ascend Laboratories, LLC); the warfarin FDA label on DailyMed (effective May 29, 2026, Amneal Pharmaceuticals LLC).
What does the dronabinol label say about warfarin?
Dronabinol label, drug interactionsPotential for displacement of other drugs from plasma proteins; monitor for adverse reactions to concomitant highly protein-bound drugs and narrow therapeutic index drugs (e.g., warfarin, cyclosporine, amphotericin B) when initiating or increasing the dosage of dronabinol capsules.
Source: FDA drug label (Syndros, NDA205525), Wellhouse Pharma, LLC, effective April 17, 2026 (SPL set 3cdcb4f5-5af9-4ff7-b535-2a5cf4c6da89), via openFDA
Source: FDA drug label (Dronabinol), NDA018651 (Alkem Labs Ltd), as published by Ascend Laboratories, LLC, effective May 6, 2026 (SPL set adb1801c-0fb5-4e16-b969-1db91230e0b9), via openFDA; the full label on DailyMed
What does the warfarin label say about dronabinol?
Warfarin's label (effective May 29, 2026) does not name dronabinol 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
| Dronabinol | Warfarin | |
|---|---|---|
| Labeled for | n/a | Blood clots (DVT and PE), Atrial fibrillation |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $3.35 per capsule 5 mg capsule | $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