Drug interactions
Azithromycin + Oxacillin
Severity: Minor
Azithromycin and Oxacillin: 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
Bacteriostatic macrolides could theoretically blunt the killing activity of beta-lactams, which depend on actively dividing bacteria. Clinical evidence of reduced outcomes is limited and mostly derives from in vitro data and a few observational reports in severe infections.
What this interaction means in plain words
Azithromycin and Oxacillin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Azithromycin belongs to Anti Bacterial; Oxacillin belongs to Anti Bacterial.
Why it happens
Pharmacodynamic antagonism: slowing of bacterial growth by a bacteriostatic agent may reduce the bactericidal effect of cell-wall-active penicillins.
What to do
No routine change is needed; in serious infections such as meningitis or endocarditis, avoid unnecessary co-administration of a bacteriostatic agent and monitor clinical response.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Azithromycin and Oxacillin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Oxacillin
- Bcg vaccine live + Oxacillin Moderate
- Chloramphenicol + Oxacillin Moderate
- Cholera vaccine + Oxacillin Moderate
- Demeclocycline + Oxacillin Moderate
- Doxycycline + Oxacillin Moderate
- Microbiota + Oxacillin Moderate
Other interactions of Azithromycin
- Azithromycin + Cisapride Contraindicated
- Azithromycin + Domperidone Contraindicated
- Azithromycin + Dronedarone Contraindicated
- Azithromycin + Pimozide Contraindicated
- Azithromycin + Piperaquine Contraindicated
- Azithromycin + Thioridazine Contraindicated
Frequently asked questions
Can I take Azithromycin with Oxacillin?
MediHelp rates the interaction as minor. Azithromycin and Oxacillin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Bacteriostatic macrolides could theoretically blunt the killing activity of beta-lactams, which depend on actively dividing bacteria. Clinical evidence of reduced outcomes is limited and mostly derives from in vitro data and a few observational reports in severe infections.
How serious is the interaction between Azithromycin and Oxacillin?
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; in serious infections such as meningitis or endocarditis, avoid unnecessary co-administration of a bacteriostatic agent and monitor clinical response.
What other medicines interact with Oxacillin?
MediHelp also lists interactions of Oxacillin with, for example, Bcg vaccine live, Chloramphenicol, Cholera vaccine. The full list is on the Oxacillin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
