Drug interactions
Carbidopa-entacapone-levodopa + Palovarotene
Severity: Minor
Carbidopa-entacapone-levodopa and Palovarotene: minor 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
Palovarotene is a CYP3A substrate, and moderate inhibitors raise its exposure and the risk of retinoid toxicity. Entacapone has not been shown to be a meaningful CYP3A inhibitor, so the interaction is theoretical.
What this interaction means in plain words
Carbidopa-entacapone-levodopa and Palovarotene have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Carbidopa-entacapone-levodopa belongs to Central Nervous System; Palovarotene belongs to Miscellaneous.
Why it happens
Theoretical CYP3A4 inhibition by entacapone reducing palovarotene clearance; not clearly established.
What to do
No empirical dose change is needed. Monitor for retinoid adverse effects such as mucocutaneous dryness and musculoskeletal pain.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Palovarotene
- Acitretin + Palovarotene Contraindicated
- Isotretinoin + Palovarotene Contraindicated
- Amiodarone + Palovarotene Major
- Amobarbital + Palovarotene Major
- Apalutamide + Palovarotene Major
- Aprepitant + Palovarotene Major
Frequently asked questions
Can I take Carbidopa-entacapone-levodopa with Palovarotene?
MediHelp rates the interaction as minor. Carbidopa-entacapone-levodopa and Palovarotene have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Palovarotene is a CYP3A substrate, and moderate inhibitors raise its exposure and the risk of retinoid toxicity. Entacapone has not been shown to be a meaningful CYP3A inhibitor, so the interaction is theoretical.
How serious is the interaction between Carbidopa-entacapone-levodopa and Palovarotene?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No empirical dose change is needed. Monitor for retinoid adverse effects such as mucocutaneous dryness and musculoskeletal pain.
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.
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