Drug interactions
Doxycycline + Venetoclax
Severity: Minor
Doxycycline and Venetoclax: 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 is not generally recognised as a meaningful CYP3A inhibitor, so a clinically important rise in venetoclax exposure is not well established. The interaction is largely theoretical.
What this interaction means in plain words
Doxycycline and Venetoclax 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; Venetoclax belongs to Miscellaneous.
Why it happens
Doxycycline has weak or unestablished effects on CYP3A4, so any increase in venetoclax exposure is not an established mechanism.
What to do
No venetoclax dose change is routinely needed. Monitor for venetoclax toxicity such as neutropenia and tumour lysis syndrome as usual.
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 Venetoclax
- Clarithromycin + Venetoclax Contraindicated
- Itraconazole + Venetoclax Contraindicated
- Ketoconazole + Venetoclax Contraindicated
- Posaconazole + Venetoclax Contraindicated
- Venetoclax + Voriconazole Contraindicated
- Amiodarone + Venetoclax Major
Frequently asked questions
Can I take Doxycycline with Venetoclax?
MediHelp rates the interaction as minor. Doxycycline and Venetoclax 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 is not generally recognised as a meaningful CYP3A inhibitor, so a clinically important rise in venetoclax exposure is not well established. The interaction is largely theoretical.
How serious is the interaction between Doxycycline and Venetoclax?
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 venetoclax dose change is routinely needed. Monitor for venetoclax toxicity such as neutropenia and tumour lysis syndrome as usual.
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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