Drug interactions
Atenolol-chlorthalidone + Levodopa
Severity: Moderate
Atenolol-chlorthalidone and 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 this effect adds to the blood pressure lowering of atenolol and chlorthalidone. Patients may experience dizziness or falls, particularly when starting levodopa or increasing the dose.
What this interaction means in plain words
Atenolol-chlorthalidone and 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.
Atenolol-chlorthalidone belongs to Cardiovascular; Levodopa belongs to Central Nervous System.
Why it happens
Additive hypotensive effects from dopamine-mediated vasodilation and autonomic effects combined with antihypertensive therapy.
What to do
Monitor standing and sitting blood pressure when starting or titrating levodopa. Reduce the antihypertensive dose if symptomatic hypotension develops.
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 Atenolol-chlorthalidone
Other interactions of Levodopa
- Isocarboxazid + Levodopa Contraindicated
- Levodopa + Phenelzine Contraindicated
- Levodopa + Phenelzine (nonselective MAOI) Contraindicated
- Levodopa + Procarbazine Contraindicated
- Levodopa + Tranylcypromine Contraindicated
- Amisulpride + Levodopa Major
Frequently asked questions
Can I take Atenolol-chlorthalidone with Levodopa?
MediHelp rates the interaction as moderate. Atenolol-chlorthalidone and 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 this effect adds to the blood pressure lowering of atenolol and chlorthalidone. Patients may experience dizziness or falls, particularly when starting levodopa or increasing the dose.
How serious is the interaction between Atenolol-chlorthalidone and 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 standing and sitting blood pressure when starting or titrating levodopa. Reduce the antihypertensive dose if symptomatic hypotension develops.
What other medicines interact with Atenolol-chlorthalidone?
MediHelp also lists interactions of Atenolol-chlorthalidone with, for example, Acebutolol, Aldesleukin, Amiodarone. The full list is on the Atenolol-chlorthalidone page.
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