What the FDA labels say about taking them together
Drospirenone/ethinyl estradiol and topiramate
Drospirenone/ethinyl estradiol's FDA label of May 29, 2025 names topiramate in its drug interactions section; the topiramate labels PlainMeds reads (4) do not name drospirenone/ethinyl estradiol. The drospirenone/ethinyl estradiol label: “… carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampin, topiramate and products containing St. John's wort.”
Check it at the source: the drospirenone/ethinyl estradiol FDA label on DailyMed (effective May 29, 2025, Bayer HealthCare Pharmaceuticals Inc.); the topiramate FDA label on DailyMed (effective June 1, 2026, Sun Pharmaceutical Industries, Inc.).
What does the drospirenone/ethinyl estradiol label say about topiramate?
Drospirenone/ethinyl estradiol label, drug interactionsSome drugs or herbal products that may decrease the effectiveness of hormonal contraceptives include phenytoin, barbiturates, carbamazepine, bosentan, felbamate, griseofulvin, oxcarbazepine, rifampin, topiramate and products containing St. John's wort.
Source: FDA drug label (Yaz), Bayer HealthCare Pharmaceuticals Inc., effective May 29, 2025 (SPL set 065f33e4-b587-4e66-b896-ca9ab7b7c876), via openFDA; the full label on DailyMed
What does the topiramate label say about drospirenone/ethinyl estradiol?
Topiramate's label (effective June 1, 2026) and its 3 other brand-application labels do not name drospirenone/ethinyl estradiol in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Topiramate), Sun Pharmaceutical Industries, Inc., effective June 1, 2026 (SPL set 3c909a53-ae66-4b28-a741-b60bb25a69cf), 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
| Drospirenone/ethinyl estradiol | Topiramate | |
|---|---|---|
| Labeled for | Acne, Birth control | Seizures and epilepsy, Migraine |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $0.151 per tablet 3-0.03 mg tablet | $0.0567 per tablet 100 mg tablet |
| Shortage now | No current entry | 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