Drug interactions
Ethinyl estradiol-norgestimate + Isavuconazonium
Severity: Moderate
Ethinyl estradiol-norgestimate and Isavuconazonium: 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
Isavuconazole, the active moiety, is a moderate CYP3A4 inhibitor and can increase exposure to ethinyl estradiol and norgestimate. This may increase hormone-related adverse effects.
What this interaction means in plain words
Ethinyl estradiol-norgestimate and Isavuconazonium 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.
Ethinyl estradiol-norgestimate belongs to Endocrine; Isavuconazonium belongs to Anti Fungals.
Why it happens
Isavuconazole inhibits CYP3A4, decreasing the metabolic clearance of ethinyl estradiol and progestin.
What to do
Monitor for estrogenic and progestogenic adverse effects such as hypertension, nausea and breast tenderness. Consider a lower-dose contraceptive if effects occur.
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-norgestimate
- Ethinyl estradiol-norgestimate + Fezolinetant Contraindicated
- Ethinyl estradiol-norgestimate + Ombitasvir / paritaprevir / ritonavir and dasabuvir Contraindicated
- Ethinyl estradiol-norgestimate + Tranexamic acid Contraindicated
- Aminocaproic acid + Ethinyl estradiol-norgestimate Major
- Amobarbital + Ethinyl estradiol-norgestimate Major
- Anastrozole + Ethinyl estradiol-norgestimate Major
Other interactions of Isavuconazonium
- Amobarbital + Isavuconazonium Contraindicated
- Apalutamide + Isavuconazonium Contraindicated
- Carbamazepine + Isavuconazonium Contraindicated
- Cisapride + Isavuconazonium Contraindicated
- Efavirenz + Isavuconazonium Contraindicated
- Enzalutamide + Isavuconazonium Contraindicated
Frequently asked questions
Can I take Ethinyl estradiol-norgestimate with Isavuconazonium?
MediHelp rates the interaction as moderate. Ethinyl estradiol-norgestimate and Isavuconazonium 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. Isavuconazole, the active moiety, is a moderate CYP3A4 inhibitor and can increase exposure to ethinyl estradiol and norgestimate. This may increase hormone-related adverse effects.
How serious is the interaction between Ethinyl estradiol-norgestimate and Isavuconazonium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for estrogenic and progestogenic adverse effects such as hypertension, nausea and breast tenderness. Consider a lower-dose contraceptive if effects occur.
What other medicines interact with Ethinyl estradiol-norgestimate?
MediHelp also lists interactions of Ethinyl estradiol-norgestimate with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir and dasabuvir, Tranexamic acid. The full list is on the Ethinyl estradiol-norgestimate page.
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