Drug interactions
Doxycycline + Naloxegol
Severity: Minor
Doxycycline and Naloxegol: 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
Naloxegol is a CYP3A4 and P-glycoprotein substrate, and higher exposure can cause opioid withdrawal symptoms and gastrointestinal effects like abdominal pain and diarrhea. Doxycycline is not a recognized CYP3A4 inhibitor, so a meaningful increase is unlikely.
What this interaction means in plain words
Doxycycline and Naloxegol 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; Naloxegol belongs to Gastrointestinal Tract.
Why it happens
Theoretical weak CYP3A4 inhibition; no established pharmacokinetic effect.
What to do
No dose change is required; watch for abdominal pain, diarrhea or withdrawal-like symptoms.
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 Naloxegol
- Clarithromycin + Naloxegol Contraindicated
- Itraconazole + Naloxegol Contraindicated
- Ketoconazole + Naloxegol Contraindicated
- Naloxegol + Posaconazole Contraindicated
- Naloxegol + Voriconazole Contraindicated
- Bupropion-naltrexone + Naloxegol Major
Frequently asked questions
Can I take Doxycycline with Naloxegol?
MediHelp rates the interaction as minor. Doxycycline and Naloxegol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Naloxegol is a CYP3A4 and P-glycoprotein substrate, and higher exposure can cause opioid withdrawal symptoms and gastrointestinal effects like abdominal pain and diarrhea. Doxycycline is not a recognized CYP3A4 inhibitor, so a meaningful increase is unlikely.
How serious is the interaction between Doxycycline and Naloxegol?
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 change is required; watch for abdominal pain, diarrhea or withdrawal-like symptoms.
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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