Drug interactions
Betaxolol + Carbidopa-entacapone-levodopa
Severity: Moderate
Betaxolol and Carbidopa-entacapone-levodopa: 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 cause orthostatic hypotension, and betaxolol lowers blood pressure and heart rate. Combined use may cause additive hypotension, particularly early in treatment or after dose changes.
What this interaction means in plain words
Betaxolol and Carbidopa-entacapone-levodopa 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.
Betaxolol belongs to Cardiovascular; Carbidopa-entacapone-levodopa belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic hypotensive effects of dopaminergic stimulation and beta-blockade.
What to do
Monitor supine and standing blood pressure when levodopa is started or changed. Reduce the betaxolol 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 Betaxolol
- Acebutolol + Betaxolol Major
- Aldesleukin + Betaxolol Major
- Amifostine + Betaxolol Major
- Amiodarone + Betaxolol Major
- Atenolol-chlorthalidone + Betaxolol Major
- Atenolol + Betaxolol Major
Frequently asked questions
Can I take Betaxolol with Carbidopa-entacapone-levodopa?
MediHelp rates the interaction as moderate. Betaxolol and Carbidopa-entacapone-levodopa 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 cause orthostatic hypotension, and betaxolol lowers blood pressure and heart rate. Combined use may cause additive hypotension, particularly early in treatment or after dose changes.
How serious is the interaction between Betaxolol and Carbidopa-entacapone-levodopa?
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 supine and standing blood pressure when levodopa is started or changed. Reduce the betaxolol 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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