Drug interactions
Cefadroxil + Sodium picosulfate / magnesium oxide / anhydrous citric acid
Severity: Moderate
Cefadroxil 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 into its laxative metabolite. Antibiotics can suppress these bacteria and reduce the bowel-cleansing effect, risking an inadequate colonoscopy preparation. This is described in product labeling for antibiotic use.
What this interaction means in plain words
Cefadroxil 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-induced reduction of colonic bacteria needed to convert sodium picosulfate to its active metabolite.
What to do
Where possible, avoid starting the antibiotic shortly before bowel preparation or complete the course beforehand. Assess preparation quality and consider an additional or alternative cleansing agent if inadequate.
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 Cefadroxil
- Amikacin + Cefadroxil Moderate
- Avelumab + Cefadroxil Moderate
- Balstilimab + Cefadroxil Moderate
- Bcg vaccine live + Cefadroxil Moderate
- Cefadroxil + Cholera vaccine Moderate
- Cefadroxil + Gentamicin Moderate
Frequently asked questions
Can I take Cefadroxil with Sodium picosulfate / magnesium oxide / anhydrous citric acid?
MediHelp rates the interaction as moderate. Cefadroxil 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 into its laxative metabolite. Antibiotics can suppress these bacteria and reduce the bowel-cleansing effect, risking an inadequate colonoscopy preparation. This is described in product labeling for antibiotic use.
How serious is the interaction between Cefadroxil 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: Where possible, avoid starting the antibiotic shortly before bowel preparation or complete the course beforehand. Assess preparation quality and consider an additional or alternative cleansing agent if inadequate.
What other medicines interact with Cefadroxil?
MediHelp also lists interactions of Cefadroxil with, for example, Amikacin, Avelumab, Balstilimab. The full list is on the Cefadroxil page.
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