Drug interactions
Gentamicin + Sodium picosulfate / magnesium oxide / anhydrous citric acid
Severity: Moderate
Gentamicin 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
Picosulfate requires conversion by colonic bacteria to its active form. Antibiotics that alter colonic flora may reduce bowel cleansing efficacy. Oral gentamicin would be most relevant; parenteral gentamicin has limited effect.
What this interaction means in plain words
Gentamicin 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 flora reduces bacterial activation of picosulfate.
What to do
If the bowel preparation is for colonoscopy and antibiotics are given, confirm cleansing adequacy; consider an alternative non-prodrug preparation if flora suppression is expected.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Gentamicin and Sodium picosulfate / magnesium oxide / anhydrous citric acid, 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 14 days on the web. No card needed.
Other interactions of Gentamicin
- Cidofovir + Gentamicin Contraindicated
- Adefovir + Gentamicin Major
- Amikacin + Gentamicin Major
- Amlodipine-hydrochlorothiazide-valsartan + Gentamicin Major
- Amphotericin b deoxycholate + Gentamicin Major
- Amphotericin b + Gentamicin Major
Frequently asked questions
Can I take Gentamicin with Sodium picosulfate / magnesium oxide / anhydrous citric acid?
MediHelp rates the interaction as moderate. Gentamicin 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. Picosulfate requires conversion by colonic bacteria to its active form. Antibiotics that alter colonic flora may reduce bowel cleansing efficacy. Oral gentamicin would be most relevant; parenteral gentamicin has limited effect.
How serious is the interaction between Gentamicin 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: If the bowel preparation is for colonoscopy and antibiotics are given, confirm cleansing adequacy; consider an alternative non-prodrug preparation if flora suppression is expected.
What other medicines interact with Gentamicin?
MediHelp also lists interactions of Gentamicin with, for example, Cidofovir, Adefovir, Amikacin. The full list is on the Gentamicin 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.
