Etonogestrel and Estradiol Interaction
Drug interaction information between Etonogestrel and Estradiol.
Etonogestrel and Estradiol have a documented moderate interaction in FDA labeling.
FDA drug labeling documents a moderate-severity interaction between Etonogestrel and Estradiol. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.
How They Interact
Certain medications can speed up how the body breaks down birth control hormones. This makes the birth control less effective and increases the risk of pregnancy.
What To Do
Use a backup birth control method, like condoms, while taking these drugs. Keep using backup for 28 days after you stop the interacting medication.
FDA Label Information
Counsel women to use an alternative non-hormonal method of contraception or a back-up method when enzyme inducers are used with Etonogestrel and ethinyl estradiol vaginal ring, and to continue back-up non-hormonal contraception for 28 days after discontinuing the enzyme inducer to ensure contraceptive reliability. Note: Etonogestrel and ethinyl estradiol vaginal ring may interfere with the correct placement and position of certain female barrier methods such as a diaphragm or female condom. These methods are not recommended as back-up methods with Etonogestrel and ethinyl estradiol vaginal...
Etonogestrel Also Interacts With
- Glecaprevir/Pibrentasvir moderate
- Atorvastatin minor
- Amoxicillin minor
- Lamotrigine minor
- Topiramate minor
Estradiol Also Interacts With
- Drospirenone/Ethinyl Estradiol major
- Glecaprevir/Pibrentasvir moderate
- Tacrolimus Topical moderate
- Rosuvastatin minor
- Lamotrigine minor
Frequently Asked Questions
Can I take Etonogestrel and Estradiol together?
This is a moderate interaction. Use a backup birth control method, like condoms, while taking these drugs. Keep using backup for 28 days after you stop the interacting medication.
How serious is the interaction between Etonogestrel and Estradiol?
This interaction is classified as "moderate" severity by the FDA. Moderate interactions may worsen your condition or change how your medications work.
Why do Etonogestrel and Estradiol interact?
Certain medications can speed up how the body breaks down birth control hormones. This makes the birth control less effective and increases the risk of pregnancy.
Understanding the Etonogestrel and Estradiol Interaction
FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Etonogestrel belongs to the Progestin (Implant) class and Estradiol belongs to the Estrogen Hormone class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Certain medications can speed up how the body breaks down birth control hormones. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.
Context around a specific patient determines real-world impact. Etonogestrel has 29 total documented interactions on file in this dataset, and Estradiol has 54. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Use a backup birth control method, like condoms, while taking these drugs. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.
An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Etonogestrel or Estradiol based on a web page, speak with your prescriber or pharmacist before making any change.
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.
Read our methodology - how this data is sourced, computed, and verified.