Drug interactions
Enasidenib + Ethinyl estradiol-levonorgestrel
Severity: Moderate
Enasidenib and Ethinyl estradiol-levonorgestrel: moderate 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
Enasidenib may alter exposure to hormonal contraceptives, and the direction and size of the change are not well defined. A reduction could compromise contraceptive efficacy, which matters because enasidenib is teratogenic.
What this interaction means in plain words
Enasidenib and Ethinyl estradiol-levonorgestrel can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Enasidenib belongs to Oncology; Ethinyl estradiol-levonorgestrel belongs to Endocrine.
Why it happens
The mechanism is not established; enasidenib may modulate CYP enzymes or transporters involved in contraceptive disposition.
What to do
Advise an additional non-hormonal barrier method during enasidenib therapy. Do not rely solely on hormonal contraception.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Ethinyl estradiol-levonorgestrel
- Ethinyl estradiol-levonorgestrel + Fezolinetant Contraindicated
- Ethinyl estradiol-levonorgestrel + Ombitasvir / paritaprevir / ritonavir and dasabuvir Contraindicated
- Ethinyl estradiol-levonorgestrel + Tranexamic acid Contraindicated
- Aminocaproic acid + Ethinyl estradiol-levonorgestrel Major
- Amobarbital + Ethinyl estradiol-levonorgestrel Major
- Anastrozole + Ethinyl estradiol-levonorgestrel Major
Other interactions of Enasidenib
Frequently asked questions
Can I take Enasidenib with Ethinyl estradiol-levonorgestrel?
MediHelp rates the interaction as moderate. Enasidenib and Ethinyl estradiol-levonorgestrel can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Enasidenib may alter exposure to hormonal contraceptives, and the direction and size of the change are not well defined. A reduction could compromise contraceptive efficacy, which matters because enasidenib is teratogenic.
How serious is the interaction between Enasidenib and Ethinyl estradiol-levonorgestrel?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise an additional non-hormonal barrier method during enasidenib therapy. Do not rely solely on hormonal contraception.
What other medicines interact with Ethinyl estradiol-levonorgestrel?
MediHelp also lists interactions of Ethinyl estradiol-levonorgestrel with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir and dasabuvir, Tranexamic acid. The full list is on the Ethinyl estradiol-levonorgestrel page.
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