Drug interactions
Carbidopa-entacapone-levodopa + Losartan
Severity: Moderate
Carbidopa-entacapone-levodopa and Losartan: 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
Levodopa can lower blood pressure and cause orthostatic hypotension, adding to losartan. Dizziness and falls may occur, especially early in therapy or after dose changes.
What this interaction means in plain words
Carbidopa-entacapone-levodopa and Losartan 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; Losartan belongs to Cardiovascular.
Why it happens
Additive hypotensive effects of levodopa-derived dopamine and angiotensin receptor blockade.
What to do
Monitor sitting and standing blood pressure when either drug is started or adjusted. Reduce the losartan dose if symptomatic hypotension occurs.
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-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 Losartan
- Aliskiren + Losartan Contraindicated
- Losartan + Sparsentan Contraindicated
- Amifostine + Losartan Major
- Amiloride + Losartan Major
- Amlodipine-benazepril + Losartan Major
- Amlodipine-hydrochlorothiazide-valsartan + Losartan Major
Frequently asked questions
Can I take Carbidopa-entacapone-levodopa with Losartan?
MediHelp rates the interaction as moderate. Carbidopa-entacapone-levodopa and Losartan 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. Levodopa can lower blood pressure and cause orthostatic hypotension, adding to losartan. Dizziness and falls may occur, especially early in therapy or after dose changes.
How serious is the interaction between Carbidopa-entacapone-levodopa and Losartan?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor sitting and standing blood pressure when either drug is started or adjusted. Reduce the losartan dose if symptomatic hypotension occurs.
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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