Drug interactions
Ethinyl estradiol-drospirenone + Netupitant / palonosetron
Severity: Minor
Ethinyl estradiol-drospirenone and Netupitant / palonosetron: minor 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
Netupitant is a moderate CYP3A4 inhibitor and may modestly increase exposure to ethinyl estradiol and drospirenone. The clinical impact is expected to be small, and contraceptive efficacy is not reduced.
What this interaction means in plain words
Ethinyl estradiol-drospirenone and Netupitant / palonosetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Netupitant inhibits CYP3A4, slightly reducing the clearance of the contraceptive components.
What to do
No routine adjustment is needed for short antiemetic courses; counsel the patient about estrogen-related adverse effects such as nausea or breast tenderness.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Ethinyl estradiol-drospirenone
- Ethinyl estradiol-drospirenone + Fezolinetant Contraindicated
- Ethinyl estradiol-drospirenone + Ombitasvir / paritaprevir / ritonavir Contraindicated
- Ethinyl estradiol-drospirenone + Ombitasvir / paritaprevir / ritonavir and dasabuvir Contraindicated
- Ethinyl estradiol-drospirenone + Tranexamic acid Contraindicated
- Aminocaproic acid + Ethinyl estradiol-drospirenone Major
- Amobarbital + Ethinyl estradiol-drospirenone Major
Frequently asked questions
Can I take Ethinyl estradiol-drospirenone with Netupitant / palonosetron?
MediHelp rates the interaction as minor. Ethinyl estradiol-drospirenone and Netupitant / palonosetron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Netupitant is a moderate CYP3A4 inhibitor and may modestly increase exposure to ethinyl estradiol and drospirenone. The clinical impact is expected to be small, and contraceptive efficacy is not reduced.
How serious is the interaction between Ethinyl estradiol-drospirenone and Netupitant / palonosetron?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine adjustment is needed for short antiemetic courses; counsel the patient about estrogen-related adverse effects such as nausea or breast tenderness.
What other medicines interact with Ethinyl estradiol-drospirenone?
MediHelp also lists interactions of Ethinyl estradiol-drospirenone with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir, Ombitasvir / paritaprevir / ritonavir and dasabuvir. The full list is on the Ethinyl estradiol-drospirenone page.
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