Drug interactions
Cilastatin-imipenem + Sodium picosulfate
Severity: Moderate
Cilastatin-imipenem and Sodium picosulfate: 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 that needs colonic bacteria to be converted to its active laxative form. Systemic antibiotics such as imipenem may disturb the colonic flora and reduce this activation, which can lead to a poorer bowel cleansing result before colonoscopy.
What this interaction means in plain words
Cilastatin-imipenem and Sodium picosulfate 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 suppression of colonic bacteria reduces conversion of picosulfate to its active metabolite.
What to do
Where possible, avoid scheduling bowel preparation during an antibiotic course, or confirm the quality of bowel cleansing before the procedure. Consider an alternative preparation not dependent on bacterial activation if cleansing is likely to be 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 Cilastatin-imipenem
Frequently asked questions
Can I take Cilastatin-imipenem with Sodium picosulfate?
MediHelp rates the interaction as moderate. Cilastatin-imipenem and Sodium picosulfate 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 that needs colonic bacteria to be converted to its active laxative form. Systemic antibiotics such as imipenem may disturb the colonic flora and reduce this activation, which can lead to a poorer bowel cleansing result before colonoscopy.
How serious is the interaction between Cilastatin-imipenem and Sodium picosulfate?
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 scheduling bowel preparation during an antibiotic course, or confirm the quality of bowel cleansing before the procedure. Consider an alternative preparation not dependent on bacterial activation if cleansing is likely to be inadequate.
What other medicines interact with Cilastatin-imipenem?
MediHelp also lists interactions of Cilastatin-imipenem with, for example, Divalproex, Ganciclovir, Valproic acid. The full list is on the Cilastatin-imipenem page.
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