Etonogestrel and ethinyl estradiol and Norelgestromin and ethinyl estradiol interaction
Etonogestrel and ethinyl estradiol and Norelgestromin and ethinyl estradiol: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Norelgestromin and ethinyl estradiol label · effective 2026-04-16
Breast cancer or other estrogen- or progestin-sensitive cancer ( 4 )
Effects of Other Drugs on Combined Hormonal Contraceptives Substances Decreasing the Plasma Concentrations of CHCs and Potentially Diminishing the Efficacy of CHCs Drugs or herbal products that induce certain enzymes, including cytochrome P450 3A4 (CYP3A4), may decrease the plasma concentrations of CHCs and potentially diminish the effectiveness of CHCs or increase…
From the Etonogestrel and ethinyl estradiol (Etonogestrel/Ethinyl Estradiol) label · effective 2025-02-26
Effects of CHCs on Other Drugs CHCs containing ethinyl estradiol may inhibit the metabolism of other compounds (e.g., cyclosporine, prednisolone, theophylline, tizanidine, and voriconazole) and increase their plasma concentrations.
The effects of other antibiotics on etonogestrel or ethinyl estradiol concentrations have not been evaluated.
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.