Isotretinoin and Estradiol Interaction
Drug interaction information between Isotretinoin and Estradiol.
Isotretinoin and Estradiol have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Isotretinoin 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
Studies show that isotretinoin does not change the levels of estradiol in your body. It does not interfere with how this hormone is processed.
What To Do
These drugs can be taken together safely. No special monitoring or dose changes are required.
FDA Label Information
Norethindrone/ethinyl estradiol: In a study of 31 premenopausal female patients with severe recalcitrant nodular acne receiving OrthoNovum ® 7/7/7 Tablets as an oral contraceptive agent, isotretinoin capsules at the recommended dose of 1 mg/kg/day, did not induce clinically relevant changes in the pharmacokinetics of ethinyl estradiol and norethindrone and in the serum levels of progesterone, follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
Isotretinoin Also Interacts With
- Progesterone major
- Retinol moderate
- Norethindrone minor
- Phenytoin minor
- Minocycline minor
Estradiol Also Interacts With
- Drospirenone/Ethinyl Estradiol major
- Glecaprevir/Pibrentasvir moderate
- Etonogestrel moderate
- Tacrolimus Topical moderate
- Rosuvastatin minor
Frequently Asked Questions
Can I take Isotretinoin and Estradiol together?
This is a minor interaction. These drugs can be taken together safely. No special monitoring or dose changes are required.
How serious is the interaction between Isotretinoin and Estradiol?
This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.
Why do Isotretinoin and Estradiol interact?
Studies show that isotretinoin does not change the levels of estradiol in your body. It does not interfere with how this hormone is processed.
Understanding the Isotretinoin and Estradiol Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Isotretinoin belongs to the Systemic Retinoid class and Estradiol belongs to the Estrogen Hormone class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Studies show that isotretinoin does not change the levels of estradiol in your body. 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. Isotretinoin has 7 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: These drugs can be taken together safely. 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 Isotretinoin 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.