Does Cyp3a Inducers Interact with Drospirenone And Estetrol?
CDI records a contraindicated classification for Cyp3a Inducers and Drospirenone And Estetrol. The stored summary is: Strong CYP3A inducers decrease DRSP exposure, leading to contraceptive failure and breakthrough bleeding. Avoid concomitant use. The mechanism involves drsp is a cyp3a4 substrate; induction decreases drsp exposure. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.
- Severity
- Contraindicated
- Management
- Do not take together
- Data Source
- U.S. FDA via OpenFDA
Recorded Mechanism
DRSP is a CYP3A4 substrate; induction decreases DRSP exposure
What To Tell Your Doctor or Pharmacist
If you are taking Cyp3a Inducers and your doctor is considering prescribing Drospirenone And Estetrol (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Ask about alternative medications that do not interact with your current regimen
- Ask how frequently you should be monitored while these are co-prescribed
- Never stop or change either medication without first consulting your healthcare provider