What the FDA labels say about taking them together
Ivermectin and warfarin
Ivermectin's FDA label (Stromectol) of September 20, 2024 names warfarin in its drug interactions section; the warfarin label PlainMeds reads does not name ivermectin. The ivermectin label: “Drug Interactions Post-marketing reports of increased INR have been rarely reported when ivermectin was co-administered with warfarin.”
Check it at the source: the ivermectin FDA label on DailyMed (effective July 11, 2024, Azurity Pharmaceuticals); the warfarin FDA label on DailyMed (effective May 29, 2026, Amneal Pharmaceuticals LLC).
What does the ivermectin label say about warfarin?
Stromectol label (Merck Sharp & Dohme LLC, September 20, 2024), drug interactionsDrug Interactions Post-marketing reports of increased INR (International Normalized Ratio) have been rarely reported when ivermectin was co-administered with warfarin.
Source: FDA drug label (Stromectol, NDA050742), Merck Sharp & Dohme LLC, effective September 20, 2024 (SPL set 681888c9-af79-4b7d-ae80-c3f4f6f1effd), via openFDA
Source: FDA drug label (Sklice), NDA202736 (Arbor Pharms Llc), as published by Azurity Pharmaceuticals, effective July 11, 2024 (SPL set 7579bdfe-a538-4bff-b7c7-df2c4b6f13db), via openFDA; the full label on DailyMed
What does the warfarin label say about ivermectin?
Warfarin's label (effective May 29, 2026) does not name ivermectin 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
| Ivermectin | Warfarin | |
|---|---|---|
| Labeled for | n/a | Blood clots (DVT and PE), Atrial fibrillation |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $2.75 per gram 1% cream | $0.093 per tablet 2 mg tablet |
| Shortage now | A presentation being discontinued | 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