What the FDA labels say about taking them together
Fentanyl and itraconazole
Itraconazole's FDA label of July 13, 2026 names fentanyl in its drug interactions section; the fentanyl labels PlainMeds reads (2) do not name itraconazole. The itraconazole label: “Fentanyl Not recommended during and 2 weeks after TOLSURA treatment.”
Check it at the source: the fentanyl FDA label on DailyMed (effective March 6, 2026, Hikma Pharmaceuticals USA Inc.); the itraconazole FDA label on DailyMed (effective July 13, 2026, Janssen Pharmaceuticals, Inc.).
What does the fentanyl label say about itraconazole?
Fentanyl's label (effective March 6, 2026) and its 1 other brand-application label do not name itraconazole in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Fentanyl Citrate), Hikma Pharmaceuticals USA Inc., effective March 6, 2026 (SPL set ce5db1c2-feb1-4ad2-847a-d02e865bd47e), via openFDA; the full label on DailyMed
What does the itraconazole label say about fentanyl?
Itraconazole label, drug interactionsFentanyl Not recommended during and 2 weeks after SPORANOX ® treatment.
Source: FDA drug label (Tolsura, NDA208901), Mayne Pharma Commercial LLC, effective April 23, 2025 (SPL set 306352d1-9d5a-49ad-b72d-893b99546861), via openFDA
Source: FDA drug label (SPORANOX), Janssen Pharmaceuticals, Inc., effective July 13, 2026 (SPL set a4d555fa-787c-40fb-bb7d-b0d4f7318fd0), 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
| Fentanyl | Itraconazole | |
|---|---|---|
| Labeled for | Pain | Fungal infections |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $1.79 per mL 100 mcg/2 mL vial | $0.910 per capsule 100 mg capsule |
| Shortage now | In shortage | 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