Drug interactions
Estradiol + Prednisone
Severity: Minor
Estradiol and Prednisone: 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
Oral estrogens raise corticosteroid-binding globulin and reduce prednisolone clearance, which can increase corticosteroid exposure and effect. The legacy claim that prednisone lowers estradiol through CYP3A4 is not well supported.
What this interaction means in plain words
Estradiol and Prednisone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Estradiol belongs to Endocrine; Prednisone belongs to Endocrine.
Why it happens
Estrogens increase transcortin binding and may reduce hepatic clearance of prednisolone, the active metabolite of prednisone.
What to do
No routine change is needed; watch for increased corticosteroid effects or adverse effects when estrogen is started or stopped, and adjust the prednisone 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 Prednisone
- Bcg vaccine live + Prednisone Contraindicated
- Measles vaccine + Prednisone Contraindicated
- Mifepristone + Prednisone Contraindicated
- Prednisone + Radium-223 dichloride Contraindicated
- Prednisone + Smallpox vaccine live Contraindicated
- Adenovirus types 4 and 7 live + Prednisone Major
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 Estradiol with Prednisone?
MediHelp rates the interaction as minor. Estradiol and Prednisone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Oral estrogens raise corticosteroid-binding globulin and reduce prednisolone clearance, which can increase corticosteroid exposure and effect. The legacy claim that prednisone lowers estradiol through CYP3A4 is not well supported.
How serious is the interaction between Estradiol and Prednisone?
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 routine change is needed; watch for increased corticosteroid effects or adverse effects when estrogen is started or stopped, and adjust the prednisone dose if needed.
What other medicines interact with Prednisone?
MediHelp also lists interactions of Prednisone with, for example, Bcg vaccine live, Measles vaccine, Mifepristone. The full list is on the Prednisone page.
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