Drug interactions
Penicillamine + Sodium sulfate / ?magnesium sulfate / potassium chloride
Severity: Moderate
Penicillamine and Sodium sulfate / ?magnesium sulfate / potassium chloride: 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
Oral sulfate-based bowel preparations contain magnesium that can chelate penicillamine and reduce its absorption. Missed absorption can reduce efficacy of penicillamine around the time of bowel preparation.
What this interaction means in plain words
Penicillamine and Sodium sulfate / ?magnesium sulfate / potassium chloride 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
Magnesium in the preparation chelates penicillamine in the gut, decreasing its 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 clinical response if timing cannot be maintained.
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 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 / ?magnesium sulfate / potassium chloride?
MediHelp rates the interaction as moderate. Penicillamine and Sodium sulfate / ?magnesium sulfate / potassium chloride 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. Oral sulfate-based bowel preparations contain magnesium that can chelate penicillamine and reduce its absorption. Missed absorption can reduce efficacy of penicillamine around the time of bowel preparation.
How serious is the interaction between Penicillamine and Sodium sulfate / ?magnesium sulfate / potassium chloride?
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 clinical response if timing cannot be maintained.
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.
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