What the FDA labels say about taking them together
Carbamazepine and deflazacort
Deflazacort's FDA label of November 13, 2025 names carbamazepine in its drug interactions section; the carbamazepine labels PlainMeds reads (3) do not name deflazacort. The deflazacort label: “Avoid concomitant use of strong (e.g., efavirenz) or moderate CYP3A4 inducers with EMFLAZA.”
Check it at the source: the carbamazepine FDA label on DailyMed (effective August 20, 2026, Novartis Pharmaceuticals Corporation); the deflazacort FDA label on DailyMed (effective November 13, 2025, PTC Therapeutics, Inc.).
What does the carbamazepine label say about deflazacort?
Carbamazepine's label (effective August 20, 2026) and its 2 other brand-application labels do not name deflazacort in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Tegretol), Novartis Pharmaceuticals Corporation, effective August 20, 2026 (SPL set 8d409411-aa9f-4f3a-a52c-fbcb0c3ec053), via openFDA; the full label on DailyMed
What does the deflazacort label say about carbamazepine?
Deflazacort label, drug interactionsAvoid concomitant use of strong (e.g., efavirenz) or moderate (e.g., carbamazepine, phenytoin) CYP3A4 inducers with EMFLAZA [see Dosage and Administration ( 2.5 ) and Clinical Pharmacology ( 12.3 )].
Source: FDA drug label (EMFLAZA), PTC Therapeutics, Inc., effective November 13, 2025 (SPL set 31b347d2-f156-4055-9d8f-7cf0df420296), 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
| Carbamazepine | Deflazacort | |
|---|---|---|
| Labeled for | Bipolar disorder, Seizures and epilepsy | n/a |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $0.119 per tablet 200 mg tablet | n/a |
| 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