Drug interactions
Dicloxacillin + Sodium picosulfate / magnesium oxide / anhydrous citric acid
Severity: Moderate
Dicloxacillin and Sodium picosulfate / magnesium oxide / anhydrous citric acid: 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
Sodium picosulfate is a prodrug activated by colonic bacteria, and antibacterial agents may reduce this activation and weaken bowel cleansing. Inadequate preparation may compromise colonoscopy quality.
What this interaction means in plain words
Dicloxacillin and Sodium picosulfate / magnesium oxide / anhydrous citric acid 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
Antibiotic suppression of colonic bacteria that convert picosulfate to its active diphenolic metabolite.
What to do
Avoid giving oral antibiotics before bowel preparation where possible, or consider an alternative non-prodrug bowel preparation; assess cleansing adequacy before the procedure.
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
- Demeclocycline + Dicloxacillin Moderate
Frequently asked questions
Can I take Dicloxacillin with Sodium picosulfate / magnesium oxide / anhydrous citric acid?
MediHelp rates the interaction as moderate. Dicloxacillin and Sodium picosulfate / magnesium oxide / anhydrous citric acid 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. Sodium picosulfate is a prodrug activated by colonic bacteria, and antibacterial agents may reduce this activation and weaken bowel cleansing. Inadequate preparation may compromise colonoscopy quality.
How serious is the interaction between Dicloxacillin and Sodium picosulfate / magnesium oxide / anhydrous citric acid?
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 giving oral antibiotics before bowel preparation where possible, or consider an alternative non-prodrug bowel preparation; assess cleansing adequacy before the procedure.
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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