Etonogestrel and ethinyl estradiol and Levonorgestrel interaction

Etonogestrel and ethinyl estradiol and Levonorgestrel: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Levonorgestrel (Skyla) label · effective 2026-03-04

Major

…Precautions ( 5.4 )] • Postpartum endometritis or infected abortion in the past 3 months • Known or suspected uterine or cervical malignancy • Known or suspected breast cancer or other progestin-sensitive cancer, now or in the past • Uterine bleeding of unknown etiology • Untreated acute cervicitis or vaginitis, including bacterial vaginosis or other lower genital…

Contraindicationsby drug classView label on DailyMed
Major

• Known or suspected breast cancer or other progestin-sensitive cancer ( 4 )

Contraindicationsby drug classView label on DailyMed

From the Etonogestrel and ethinyl estradiol (Etonogestrel/Ethinyl Estradiol) label · effective 2025-02-26

Moderate

…Kaiser Permanente and Medicaid databases) showed the VTE incidence for new users of Etonogestrel/Ethinyl Estradiol Vaginal Ring to be 11.4 events per 10,000 WY, for new users of a levonorgestrel (LNG)-containing COC 9.2 events per 10,000 WY, and for users of other COCs available during the course of the study Includes low-dose COCs containing the following progestins:…

Warnings and precautionsnames LevonorgestrelView label on DailyMed
Moderate

…study Includes low-dose COCs containing the following progestins: chlormadinone acetate, cyproterone acetate, desogestrel, dienogest, drospirenone, ethynodiol diacetate, gestodene, levonorgestrel, norethindrone, norgestimate, or norgestrel HR Adjusted for age, BMI, duration of use, VTE history : 0.8 (0.5-1.5) COCs available excluding DSG- or GSD -containing OCs…

Warnings and precautionsnames LevonorgestrelView label on DailyMed

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Not 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.