Drug interactions
Ethinyl estradiol-drospirenone + Griseofulvin
Severity: Major
Ethinyl estradiol-drospirenone and Griseofulvin: major 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
Griseofulvin has been associated with breakthrough bleeding, menstrual irregularities and reduced reliability of combined oral contraceptives. Contraceptive failure and unintended pregnancy are possible, which is especially important because griseofulvin is potentially teratogenic.
What this interaction means in plain words
Ethinyl estradiol-drospirenone and Griseofulvin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Ethinyl estradiol-drospirenone belongs to Endocrine; Griseofulvin belongs to Anti Fungals.
Why it happens
Griseofulvin is thought to induce hepatic enzymes (CYP3A4) and increase metabolism of ethinyl estradiol and the progestin, lowering their exposure.
What to do
Add a reliable non-hormonal barrier method throughout griseofulvin therapy and for at least one month after stopping. Consider an alternative antifungal where possible.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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
Other interactions of Griseofulvin
Frequently asked questions
Can I take Ethinyl estradiol-drospirenone with Griseofulvin?
MediHelp rates the interaction as major. Ethinyl estradiol-drospirenone and Griseofulvin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Griseofulvin has been associated with breakthrough bleeding, menstrual irregularities and reduced reliability of combined oral contraceptives. Contraceptive failure and unintended pregnancy are possible, which is especially important because griseofulvin is potentially teratogenic.
How serious is the interaction between Ethinyl estradiol-drospirenone and Griseofulvin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Add a reliable non-hormonal barrier method throughout griseofulvin therapy and for at least one month after stopping. Consider an alternative antifungal where possible.
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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