Drug interactions
Penicillin g procaine-penicillin g + Sodium picosulfate / magnesium oxide / anhydrous citric acid
Severity: Moderate
Penicillin g procaine-penicillin g 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 that needs colonic bacteria to convert it to its active laxative metabolite. Antibacterial agents that reduce colonic flora may lessen the bowel-cleansing effect, risking an inadequate preparation before colonoscopy. Parenteral penicillin G has less colonic exposure than oral antibiotics, so the effect is likely smaller.
What this interaction means in plain words
Penicillin g procaine-penicillin g 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 suppression of colonic bacteria reduces conversion of sodium picosulfate to its active metabolite.
What to do
Assess bowel preparation quality and consider a supplemental or alternative cleansing regimen if the preparation appears inadequate. Where possible, avoid starting antibiotics shortly before or during the preparation.
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 Penicillin g procaine-penicillin g 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 Penicillin g procaine-penicillin g
- Amifampridine + Penicillin g procaine-penicillin g Moderate
- Baricitinib + Penicillin g procaine-penicillin g Moderate
- Cholera vaccine + Penicillin g procaine-penicillin g Moderate
- Microbiota + Penicillin g procaine-penicillin g Moderate
- Omadacycline + Penicillin g procaine-penicillin g Moderate
- Penicillin g procaine-penicillin g + Vadadustat Moderate
Frequently asked questions
Can I take Penicillin g procaine-penicillin g with Sodium picosulfate / magnesium oxide / anhydrous citric acid?
MediHelp rates the interaction as moderate. Penicillin g procaine-penicillin g 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 that needs colonic bacteria to convert it to its active laxative metabolite. Antibacterial agents that reduce colonic flora may lessen the bowel-cleansing effect, risking an inadequate preparation before colonoscopy. Parenteral penicillin G has less colonic exposure than oral antibiotics, so the effect is likely smaller.
How serious is the interaction between Penicillin g procaine-penicillin g 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: Assess bowel preparation quality and consider a supplemental or alternative cleansing regimen if the preparation appears inadequate. Where possible, avoid starting antibiotics shortly before or during the preparation.
What other medicines interact with Penicillin g procaine-penicillin g?
MediHelp also lists interactions of Penicillin g procaine-penicillin g with, for example, Amifampridine, Baricitinib, Cholera vaccine. The full list is on the Penicillin g procaine-penicillin g 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.
