Drug interactions
Penicillamine + Sodium sulfate / potassium sulfate / magnesium sulfate
Severity: Moderate
Penicillamine and Sodium sulfate / potassium sulfate / magnesium sulfate: 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
Magnesium in the bowel preparation can chelate penicillamine and reduce its absorption, lowering its effect. The legacy concern about increased toxicity is not accurate; the issue is reduced efficacy.
What this interaction means in plain words
Penicillamine and Sodium sulfate / potassium sulfate / magnesium sulfate 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
Chelation of penicillamine by divalent cations reduces its gastrointestinal absorption.
What to do
Give penicillamine at least 2 hours before and not sooner than 6 hours after each dose of the bowel preparation. Monitor for loss of therapeutic response.
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 Penicillamine and Sodium sulfate / potassium sulfate / magnesium sulfate, 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 Penicillamine
- Gold sodium thiomalate + Penicillamine Major
- Aluminum hydroxide + Penicillamine Moderate
- Calcium carbonate + Penicillamine Moderate
- Calcium + Penicillamine Moderate
- Carbonyl iron + Penicillamine Moderate
- Copper + Penicillamine Moderate
Frequently asked questions
Can I take Penicillamine with Sodium sulfate / potassium sulfate / magnesium sulfate?
MediHelp rates the interaction as moderate. Penicillamine and Sodium sulfate / potassium sulfate / magnesium sulfate 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. Magnesium in the bowel preparation can chelate penicillamine and reduce its absorption, lowering its effect. The legacy concern about increased toxicity is not accurate; the issue is reduced efficacy.
How serious is the interaction between Penicillamine and Sodium sulfate / potassium sulfate / magnesium sulfate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give penicillamine at least 2 hours before and not sooner than 6 hours after each dose of the bowel preparation. Monitor for loss of therapeutic response.
What other medicines interact with Penicillamine?
MediHelp also lists interactions of Penicillamine with, for example, Gold sodium thiomalate, Aluminum hydroxide, Calcium carbonate. The full list is on the Penicillamine 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.
