Drug interactions
Armodafinil + Estradiol
Severity: Minor
Armodafinil and Estradiol: 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
Armodafinil may lower estradiol exposure through CYP3A4 induction. This may lead to reduced efficacy of hormone therapy, including breakthrough bleeding or return of menopausal symptoms.
What this interaction means in plain words
Armodafinil and Estradiol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Armodafinil belongs to Central Nervous System; Estradiol belongs to Endocrine.
Why it happens
Induction of CYP3A4 increases estradiol metabolism.
What to do
Monitor symptom control and bleeding pattern, and adjust the estrogen dose if needed.
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 Armodafinil
Other interactions of Estradiol
- Anastrozole + Estradiol Contraindicated
- Estradiol + Fezolinetant Contraindicated
- Estradiol + Ospemifene Contraindicated
- Antithrombin alfa + Estradiol Major
- Antithrombin iii + Estradiol Major
- Estradiol + Exemestane Major
Frequently asked questions
Can I take Armodafinil with Estradiol?
MediHelp rates the interaction as minor. Armodafinil and Estradiol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Armodafinil may lower estradiol exposure through CYP3A4 induction. This may lead to reduced efficacy of hormone therapy, including breakthrough bleeding or return of menopausal symptoms.
How serious is the interaction between Armodafinil and Estradiol?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor symptom control and bleeding pattern, and adjust the estrogen dose if needed.
What other medicines interact with Armodafinil?
MediHelp also lists interactions of Armodafinil with, for example, Avapritinib, Elacestrant, Elbasvir / grazoprevir. The full list is on the Armodafinil page.
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