Drug interactions
Ethinyl estradiol-drospirenone + Ombitasvir / paritaprevir / ritonavir and dasabuvir
Severity: Contraindicated
Ethinyl estradiol-drospirenone and Ombitasvir / paritaprevir / ritonavir and dasabuvir: contraindicated interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Coadministration of ethinyl estradiol-containing products with this HCV regimen has produced marked ALT elevations in clinical trials. The risk of liver injury makes the combination unsuitable. Drospirenone also carries a hyperkalemia concern with strong CYP3A inhibitors such as ritonavir.
What this interaction means in plain words
Ethinyl estradiol-drospirenone and Ombitasvir / paritaprevir / ritonavir and dasabuvir are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
The mechanism of the ALT elevation is not established; ritonavir also inhibits CYP3A4 and may raise drospirenone exposure.
What to do
Avoid ethinyl estradiol-containing contraceptives before and during this regimen. Switch to a progestin-only or non-hormonal method and restart estrogen only after the regimen has been completed, as advised in the labeling.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Ethinyl estradiol-drospirenone and Ombitasvir / paritaprevir / ritonavir and dasabuvir, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Ethinyl estradiol-drospirenone
- Ethinyl estradiol-drospirenone + Fezolinetant Contraindicated
- Ethinyl estradiol-drospirenone + Ombitasvir / paritaprevir / ritonavir Contraindicated
- Ethinyl estradiol-drospirenone + Tranexamic acid Contraindicated
- Aminocaproic acid + Ethinyl estradiol-drospirenone Major
- Amobarbital + Ethinyl estradiol-drospirenone Major
- Anastrozole + Ethinyl estradiol-drospirenone Major
Frequently asked questions
Can I take Ethinyl estradiol-drospirenone with Ombitasvir / paritaprevir / ritonavir and dasabuvir?
MediHelp rates the interaction as contraindicated. Ethinyl estradiol-drospirenone and Ombitasvir / paritaprevir / ritonavir and dasabuvir are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Coadministration of ethinyl estradiol-containing products with this HCV regimen has produced marked ALT elevations in clinical trials. The risk of liver injury makes the combination unsuitable. Drospirenone also carries a hyperkalemia concern with strong CYP3A inhibitors such as ritonavir.
How serious is the interaction between Ethinyl estradiol-drospirenone and Ombitasvir / paritaprevir / ritonavir and dasabuvir?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid ethinyl estradiol-containing contraceptives before and during this regimen. Switch to a progestin-only or non-hormonal method and restart estrogen only after the regimen has been completed, as advised in the labeling.
What other medicines interact with Ethinyl estradiol-drospirenone?
MediHelp also lists interactions of Ethinyl estradiol-drospirenone with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir, Tranexamic acid. The full list is on the Ethinyl estradiol-drospirenone page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
