What the FDA labels say about taking them together
Drospirenone/ethinyl estradiol/levomefolate and pyrimethamine
Drospirenone/ethinyl estradiol/levomefolate's FDA label of March 4, 2026 names pyrimethamine in its drug interactions section; the pyrimethamine label PlainMeds reads does not name drospirenone/ethinyl estradiol/levomefolate. The drospirenone/ethinyl estradiol/levomefolate label: “… antifolate drugs, e.g., antiepileptics (such as phenytoin), methotrexate or pyrimethamine, and may result in a decreased pharmacological effect of the antifolate drug.”
Check it at the source: the drospirenone/ethinyl estradiol/levomefolate FDA label on DailyMed (effective March 4, 2026, Bayer HealthCare Pharmaceuticals Inc.); the pyrimethamine FDA label on DailyMed (effective December 7, 2023, TILDE Sciences LLC).
What does the drospirenone/ethinyl estradiol/levomefolate label say about pyrimethamine?
Drospirenone/ethinyl estradiol/levomefolate label, drug interactionsFolates on Other Drugs Folates may modify the pharmacokinetics or pharmacodynamics of certain antifolate drugs, e.g., antiepileptics (such as phenytoin), methotrexate or pyrimethamine, and may result in a decreased pharmacological effect of the antifolate drug.
Source: FDA drug label (Safyral), Bayer HealthCare Pharmaceuticals Inc., effective March 4, 2026 (SPL set 97563516-306a-4e17-9690-edbda49ecd83), via openFDA; the full label on DailyMed
What does the pyrimethamine label say about drospirenone/ethinyl estradiol/levomefolate?
Pyrimethamine's label (effective December 7, 2023) does not name drospirenone/ethinyl estradiol/levomefolate in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Daraprim), TILDE Sciences LLC, effective December 7, 2023 (SPL set f634f34b-0952-4dd3-9da3-f84b6ab823de), 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/levomefolate | Pyrimethamine | |
|---|---|---|
| Labeled for | Birth control, Acne | n/a |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $1.38 per unit 3-0.02-0.451 | $137.01 per tablet 25 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