What the FDA labels say about taking them together
Brivaracetam and rifampin
Brivaracetam's FDA label of August 20, 2026 names rifampin in its drug interactions section; the rifampin label PlainMeds reads does not name brivaracetam. The brivaracetam label: “DRUG INTERACTIONS Rifampin: Because of decreased concentrations, increasing BRIVIACT dosage in patients on concomitant rifampin is recommended.”
Check it at the source: the brivaracetam FDA label on DailyMed (effective August 20, 2026, UCB, Inc.); the rifampin FDA label on DailyMed (effective February 11, 2026, Lupin Pharmaceuticals, Inc.).
What does the brivaracetam label say about rifampin?
Brivaracetam label, drug interactionsDRUG INTERACTIONS Rifampin: Because of decreased concentrations, increasing BRIVIACT dosage in patients on concomitant rifampin is recommended.
Source: FDA drug label (Briviact), NDA205836 (Ucb Inc), as published by UCB, Inc., effective August 20, 2026 (SPL set 3cf2f439-0e97-443e-8e33-25ecef616f6c), via openFDA; the full label on DailyMed
What does the rifampin label say about brivaracetam?
Rifampin's label (effective February 11, 2026) does not name brivaracetam in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (rifampin), Lupin Pharmaceuticals, Inc., effective February 11, 2026 (SPL set b56004f0-f23d-47f6-80c7-39884fccbccc), 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
| Brivaracetam | Rifampin | |
|---|---|---|
| Labeled for | Seizures and epilepsy | n/a |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $0.259 per tablet 100 mg tablet | $0.679 per capsule 300 mg capsule |
| Shortage now | No current entry | In shortage |
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