Drug interactions
Carbidopa-levodopa + Ferric maltol
Severity: Moderate
Carbidopa-levodopa and Ferric maltol: 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 iron binds levodopa in the gut, reducing its absorption and potentially lessening its effect, with worse motor control in some patients. This applies to oral ferric maltol.
What this interaction means in plain words
Carbidopa-levodopa and Ferric maltol 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.
Carbidopa-levodopa belongs to Central Nervous System; Ferric maltol belongs to Miscellaneous.
Why it happens
Chelation of levodopa by iron in the gastrointestinal tract, reducing absorption.
What to do
Separate doses by at least 2 hours and monitor motor response. Adjust the levodopa dose if symptoms worsen.
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 Carbidopa-levodopa
- Carbidopa-levodopa + Isocarboxazid Contraindicated
- Carbidopa-levodopa + Phenelzine Contraindicated
- Carbidopa-levodopa + Selegiline transdermal Contraindicated
- Carbidopa-levodopa + Tranylcypromine Contraindicated
- Amisulpride + Carbidopa-levodopa Major
- Asenapine + Carbidopa-levodopa Major
Other interactions of Ferric maltol
- Aluminum hydroxide + Ferric maltol Moderate
- Calcium carbonate + Ferric maltol Moderate
- Calcium + Ferric maltol Moderate
- Carbidopa-entacapone-levodopa + Ferric maltol Moderate
- Cimetidine + Ferric maltol Moderate
- Ciprofloxacin + Ferric maltol Moderate
Frequently asked questions
Can I take Carbidopa-levodopa with Ferric maltol?
MediHelp rates the interaction as moderate. Carbidopa-levodopa and Ferric maltol 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 iron binds levodopa in the gut, reducing its absorption and potentially lessening its effect, with worse motor control in some patients. This applies to oral ferric maltol.
How serious is the interaction between Carbidopa-levodopa and Ferric maltol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Separate doses by at least 2 hours and monitor motor response. Adjust the levodopa dose if symptoms worsen.
What other medicines interact with Carbidopa-levodopa?
MediHelp also lists interactions of Carbidopa-levodopa with, for example, Isocarboxazid, Phenelzine, Selegiline transdermal. The full list is on the Carbidopa-levodopa page.
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