Drug interactions
Crofelemer + Estradiol
Severity: Minor
Crofelemer 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
Crofelemer inhibits CYP3A4 in the gut in vitro, but it is minimally absorbed. A clinically relevant rise in estradiol is unlikely.
What this interaction means in plain words
Crofelemer 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.
Crofelemer belongs to Gastrointestinal Tract; Estradiol belongs to Endocrine.
Why it happens
Theoretical intestinal CYP3A4 inhibition by crofelemer; systemic effect is unlikely due to minimal absorption.
What to do
No dose adjustment is needed. Monitor for estrogenic adverse effects only if symptoms arise.
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 Estradiol
- Anastrozole + Estradiol Contraindicated
- Estradiol + Fezolinetant Contraindicated
- Estradiol + Ospemifene Contraindicated
- Antithrombin alfa + Estradiol Major
- Antithrombin iii + Estradiol Major
- Estradiol + Exemestane Major
Other interactions of Crofelemer
- Crofelemer + Ergotamine Moderate
- Alfuzosin + Crofelemer Minor
- Amiodarone + Crofelemer Minor
- Apixaban + Crofelemer Minor
- Aprepitant + Crofelemer Minor
- Armodafinil + Crofelemer Minor
Frequently asked questions
Can I take Crofelemer with Estradiol?
MediHelp rates the interaction as minor. Crofelemer 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. Crofelemer inhibits CYP3A4 in the gut in vitro, but it is minimally absorbed. A clinically relevant rise in estradiol is unlikely.
How serious is the interaction between Crofelemer 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: No dose adjustment is needed. Monitor for estrogenic adverse effects only if symptoms arise.
What other medicines interact with Estradiol?
MediHelp also lists interactions of Estradiol with, for example, Anastrozole, Fezolinetant, Ospemifene. The full list is on the Estradiol page.
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