What the FDA labels say about taking them together
Idelalisib and itraconazole
Itraconazole's FDA label of July 13, 2026 names idelalisib in its drug interactions section; the idelalisib label PlainMeds reads does not name itraconazole. The itraconazole label: “Examples of Concomitant Drugs Within Class: Bortezomib Brentuximab-vedotin Busulfan Erlotinib Gefitinib Idelalisib Imatinib Ixabepilone; …”
Check it at the source: idelalisib labels on DailyMed; the itraconazole FDA label on DailyMed (effective July 13, 2026, Janssen Pharmaceuticals, Inc.).
What does the idelalisib label say about itraconazole?
Idelalisib's label (effective ) does 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, labeler not named, effective (SPL set ), via openFDA; the full label on DailyMed
What does the itraconazole label say about idelalisib?
Itraconazole label, drug interactionsExamples of Concomitant Drugs Within Class: Bortezomib Brentuximab-vedotin Busulfan Erlotinib Gefitinib Idelalisib Imatinib Ixabepilone; Prevention or Management: Nintedanib Panobinostat Ponatinib Ruxolitinib Sonidegib Tretinoin (oral) Vandetanib; Monitor for adverse reactions. Concomitant drug dose reduction may be necessary. For idelalisib, see also.
Tolsura label (Mayne Pharma Commercial LLC, April 23, 2025), drug interactionsBortezomib Brentuximab-vedotin Busulfan Erlotinib Gefitinib Idelalisib Imatinib Ixabepilone Nintedanib Panobinostat Ponatinib Ruxolitinib Sonidegib Vandetanib Monitor for adverse reactions.
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
| Idelalisib | Itraconazole | |
|---|---|---|
| Labeled for | n/a | Fungal infections |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $0.910 per capsule 100 mg capsule |
| Shortage now | A presentation being discontinued | 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