Drug interactions
Penicillamine + Pyridoxine
Severity: Moderate
Penicillamine and Pyridoxine: 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
Penicillamine acts as a pyridoxine antagonist and can lead to pyridoxine deficiency over time. Deficiency may cause neuropathy or other symptoms, particularly with long-term or high-dose penicillamine.
What this interaction means in plain words
Penicillamine and Pyridoxine 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
Penicillamine reacts with pyridoxal to form an inactive compound and increases pyridoxine requirements.
What to do
Provide pyridoxine supplementation (commonly 25 mg daily) during long-term penicillamine therapy. Monitor for neuropathic symptoms.
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 Pyridoxine?
MediHelp rates the interaction as moderate. Penicillamine and Pyridoxine 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. Penicillamine acts as a pyridoxine antagonist and can lead to pyridoxine deficiency over time. Deficiency may cause neuropathy or other symptoms, particularly with long-term or high-dose penicillamine.
How serious is the interaction between Penicillamine and Pyridoxine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Provide pyridoxine supplementation (commonly 25 mg daily) during long-term penicillamine therapy. Monitor for neuropathic symptoms.
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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