What the FDA labels say about taking them together
Ascorbic acid and ethinyl estradiol/norelgestromin
Ethinyl estradiol/norelgestromin's FDA label of April 16, 2026 names ascorbic acid in its drug interactions section; the ascorbic acid label PlainMeds reads does not name ethinyl estradiol/norelgestromin. The ethinyl estradiol/norelgestromin label: “Ascorbic acid and acetaminophen may increase plasma EE concentrations, possibly by inhibition of conjugation.”
Check it at the source: the ascorbic acid FDA label on DailyMed (effective May 29, 2026, McGuff Pharmaceuticals, Inc.); the ethinyl estradiol/norelgestromin FDA label on DailyMed (effective April 16, 2026, Zydus Pharmaceuticals USA Inc.).
What does the ascorbic acid label say about ethinyl estradiol/norelgestromin?
Ascorbic acid's label (effective May 29, 2026) does not name ethinyl estradiol/norelgestromin in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Ascor), McGuff Pharmaceuticals, Inc., effective May 29, 2026 (SPL set 388aad52-fc01-4784-9791-1dbc80c69306), via openFDA; the full label on DailyMed
What does the ethinyl estradiol/norelgestromin label say about ascorbic acid?
Ethinyl estradiol/norelgestromin label, drug interactionsAscorbic acid and acetaminophen may increase plasma EE concentrations, possibly by inhibition of conjugation.
Source: FDA drug label (Gwyn Lo, NDA219990), Viatris Specialty LLC, effective July 6, 2026 (SPL set e92741f4-87fe-429f-b5b5-c558ed5f4fa9), via openFDA
Source: FDA drug label (norelgestromin and ethinyl estradiol), Zydus Pharmaceuticals USA Inc., effective April 16, 2026 (SPL set 10fa1458-c8ed-4197-922a-1ba7271d2b02), 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
| Ascorbic acid | Ethinyl estradiol/norelgestromin | |
|---|---|---|
| Labeled for | n/a | Birth control |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $37.16 per patch 150-35 mcg/day patch |
| 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