Drug interactions
Carbidopa-entacapone-levodopa + Carbonyl iron
Severity: Moderate
Carbidopa-entacapone-levodopa and Carbonyl iron: 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 and entacapone in the gut, reducing their absorption and possibly weakening symptom control. Patients may experience more frequent wearing-off or motor fluctuations.
What this interaction means in plain words
Carbidopa-entacapone-levodopa and Carbonyl iron 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-entacapone-levodopa belongs to Central Nervous System; Carbonyl iron belongs to Miscellaneous.
Why it happens
Chelation of levodopa and entacapone by iron in the gastrointestinal tract, reducing absorption.
What to do
Separate oral iron from the levodopa combination by at least 2 hours. Monitor motor response if iron therapy is started or stopped.
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 Carbidopa-entacapone-levodopa and Carbonyl iron, 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 Carbidopa-entacapone-levodopa
- Carbidopa-entacapone-levodopa + Isocarboxazid Contraindicated
- Carbidopa-entacapone-levodopa + Phenelzine Contraindicated
- Carbidopa-entacapone-levodopa + Selegiline transdermal Contraindicated
- Carbidopa-entacapone-levodopa + Tranylcypromine Contraindicated
- Amisulpride + Carbidopa-entacapone-levodopa Major
- Asenapine transdermal + Carbidopa-entacapone-levodopa Major
Other interactions of Carbonyl iron
- Aluminum hydroxide + Carbonyl iron Moderate
- Baloxavir marboxil + Carbonyl iron Moderate
- Calcium acetate + Carbonyl iron Moderate
- Calcium carbonate + Carbonyl iron Moderate
- Calcium + Carbonyl iron Moderate
- Carbidopa-levodopa + Carbonyl iron Moderate
Frequently asked questions
Can I take Carbidopa-entacapone-levodopa with Carbonyl iron?
MediHelp rates the interaction as moderate. Carbidopa-entacapone-levodopa and Carbonyl iron 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 and entacapone in the gut, reducing their absorption and possibly weakening symptom control. Patients may experience more frequent wearing-off or motor fluctuations.
How serious is the interaction between Carbidopa-entacapone-levodopa and Carbonyl iron?
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 oral iron from the levodopa combination by at least 2 hours. Monitor motor response if iron therapy is started or stopped.
What other medicines interact with Carbidopa-entacapone-levodopa?
MediHelp also lists interactions of Carbidopa-entacapone-levodopa with, for example, Isocarboxazid, Phenelzine, Selegiline transdermal. The full list is on the Carbidopa-entacapone-levodopa 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.
