Drug interactions
Demeclocycline + Dicloxacillin
Severity: Moderate
Demeclocycline and Dicloxacillin: moderate 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 tetracyclines can reduce the killing effect of penicillins on bacteria that need active growth. Evidence is mostly in vitro and from older reports, but it may matter in serious infections.
What this interaction means in plain words
Demeclocycline and Dicloxacillin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Tetracycline-induced inhibition of bacterial growth reduces the activity of cell-wall-active beta-lactams.
What to do
Avoid combining in serious infections that need bactericidal therapy. If unavoidable, monitor clinical response closely.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Dicloxacillin
- Dicloxacillin + Phenindione Major
- Atogepant + Dicloxacillin Moderate
- Axitinib + Dicloxacillin Moderate
- Bcg vaccine live + Dicloxacillin Moderate
- Cholera vaccine + Dicloxacillin Moderate
- Dicloxacillin + Doxycycline Moderate
Frequently asked questions
Can I take Demeclocycline with Dicloxacillin?
MediHelp rates the interaction as moderate. Demeclocycline and Dicloxacillin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Bacteriostatic tetracyclines can reduce the killing effect of penicillins on bacteria that need active growth. Evidence is mostly in vitro and from older reports, but it may matter in serious infections.
How serious is the interaction between Demeclocycline and Dicloxacillin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining in serious infections that need bactericidal therapy. If unavoidable, monitor clinical response closely.
What other medicines interact with Dicloxacillin?
MediHelp also lists interactions of Dicloxacillin with, for example, Phenindione, Atogepant, Axitinib. The full list is on the Dicloxacillin page.
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