What the FDA labels say about taking them together
Trazodone and warfarin
Trazodone's FDA label of January 22, 2026 names warfarin in its drug interactions section; warfarin's label does not name trazodone itself but warns about its class (serotonin reuptake inhibitors). The trazodone label: “Serotonin release by platelets plays an important role in hemostasis. The concurrent use of an antiplatelet agent or anticoagulant with RALDESY may potentiate the risk of bleeding.”
Check it at the source: the trazodone FDA label on DailyMed (effective January 22, 2026, Zydus Pharmaceuticals USA Inc.); the warfarin FDA label on DailyMed (effective May 29, 2026, Amneal Pharmaceuticals LLC).
What does the trazodone label say about warfarin?
Trazodone label, drug interactionsExamples triptans, antidepressants (tricyclic and serotonin uptake inhibitors), fentanyl, lithium, tramadol, tryptophan, buspirone, and St. John's Wort Antiplatelet Agents and Anticoagulants Clinical Impact Serotonin release by platelets plays an important role in hemostasis. The concurrent use of an antiplatelet agent or anticoagulant with trazodone may potentiate the risk of bleeding. Intervention Inform patients of the increased risk of bleeding with the concomitant use of trazodone and antiplatelet agents and anticoagulants. …
Trazodone label, warnings and precautionsIncreased Risk of Bleeding: Concomitant use of aspirin, nonsteroidal anti-inflammatory drugs (NSAIDs), other antiplatelet drugs, warfarin, and other anticoagulants may increase this risk ( 5.5 ).
Source: FDA drug label (Raldesy Tm, NDA218637), Validus Pharmaceuticals LLC, effective September 1, 2026 (SPL set 34708cc1-b0b2-4fd0-b9f3-7f008b457fc9), via openFDA
Source: FDA drug label (Trazodone Hydrochloride), Zydus Pharmaceuticals USA Inc., effective January 22, 2026 (SPL set 704aebf9-2fff-4ef3-8323-9ff0d7f0ffd9), via openFDA; the full label on DailyMed
What does the warfarin label say about trazodone?
Warfarin's label does not name trazodone itself; it warns about its class (serotonin reuptake inhibitors):
Warfarin label, drug interactionsDrugs that Can Increase the Risk of Bleeding Drug Class Specific Drugs Anticoagulants argatroban, dabigatran, bivalirudin, desirudin, heparin, lepirudin Antiplatelet Agents aspirin, cilostazol, clopidogrel, dipyridamole, prasugrel, ticlopidine Nonsteroidal Anti-Inflammatory Agents celecoxib, diclofenac, diflunisal, fenoprofen, ibuprofen, indomethacin, ketoprofen, ketorolac, mefenamic acid, naproxen, oxaprozin, piroxicam, sulindac Serotonin Reuptake Inhibitors citalopram, desvenlafaxine, duloxetine, escitalopram …
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
| Trazodone | Warfarin | |
|---|---|---|
| Labeled for | Depression | Blood clots (DVT and PE), Atrial fibrillation |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $0.0307 per tablet 50 mg tablet | $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