Drug interactions
Atenolol-chlorthalidone + Ketamine
Severity: Moderate
Atenolol-chlorthalidone and Ketamine: 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
Ketamine usually raises heart rate and blood pressure through sympathetic stimulation, but in patients on beta-blockers and diuretics this may be blunted. Hypotension and myocardial depression can occur, especially in volume-depleted or critically ill patients.
What this interaction means in plain words
Atenolol-chlorthalidone and Ketamine 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; Ketamine belongs to Central Nervous System.
Why it happens
Beta-blockade reduces compensatory sympathetic responses to ketamine, and diuretic-related volume depletion adds to hypotensive effects.
What to do
Monitor blood pressure and heart rate closely during anesthesia or sedation. Ensure adequate volume status and have vasopressors available.
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 Ketamine
Frequently asked questions
Can I take Atenolol-chlorthalidone with Ketamine?
MediHelp rates the interaction as moderate. Atenolol-chlorthalidone and Ketamine 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. Ketamine usually raises heart rate and blood pressure through sympathetic stimulation, but in patients on beta-blockers and diuretics this may be blunted. Hypotension and myocardial depression can occur, especially in volume-depleted or critically ill patients.
How serious is the interaction between Atenolol-chlorthalidone and Ketamine?
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 blood pressure and heart rate closely during anesthesia or sedation. Ensure adequate volume status and have vasopressors available.
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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