Drug interactions
Doxycycline + Elacestrant
Severity: Minor
Doxycycline and Elacestrant: 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
Doxycycline might modestly increase elacestrant levels through weak CYP3A4 inhibition, but this is largely theoretical. Elacestrant's labeled caution applies to stronger CYP3A4 inhibitors.
What this interaction means in plain words
Doxycycline and Elacestrant have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Doxycycline belongs to Anti Bacterial; Elacestrant belongs to Oncology.
Why it happens
Possible weak inhibition of CYP3A4-mediated elacestrant metabolism, not established for doxycycline.
What to do
No routine adjustment is needed; monitor for elacestrant adverse effects such as nausea and lipid elevations.
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 Doxycycline
- Acitretin + Doxycycline Contraindicated
- Aminolevulinic acid + Doxycycline Major
- Cholera vaccine + Doxycycline Major
- Doxycycline + Isotretinoin Major
- Doxycycline + Methoxyflurane Major
- Doxycycline + Microbiota Major
Other interactions of Elacestrant
Frequently asked questions
Can I take Doxycycline with Elacestrant?
MediHelp rates the interaction as minor. Doxycycline and Elacestrant have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Doxycycline might modestly increase elacestrant levels through weak CYP3A4 inhibition, but this is largely theoretical. Elacestrant's labeled caution applies to stronger CYP3A4 inhibitors.
How serious is the interaction between Doxycycline and Elacestrant?
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 adjustment is needed; monitor for elacestrant adverse effects such as nausea and lipid elevations.
What other medicines interact with Doxycycline?
MediHelp also lists interactions of Doxycycline with, for example, Acitretin, Aminolevulinic acid, Cholera vaccine. The full list is on the Doxycycline page.
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