Drug interactions
Ketamine + Labetalol
Severity: Moderate
Ketamine and Labetalol: 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 blood pressure and heart rate through sympathetic stimulation, but in patients with catecholamine depletion or beta-blockade it may act as a myocardial depressant. Combined use may cause hypotension or reduced cardiac output.
What this interaction means in plain words
Ketamine and Labetalol 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 belongs to Central Nervous System; Labetalol belongs to Cardiovascular.
Why it happens
Labetalol blunts ketamine's sympathomimetic effect while the anesthetic's direct myocardial depression and vasodilation add to hypotension.
What to do
Monitor blood pressure and heart rate continuously during induction and maintenance. Titrate ketamine cautiously and be ready to treat hypotension.
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 Labetalol
- Amifostine + Labetalol Major
- Amiodarone + Labetalol Major
- Atenolol-chlorthalidone + Labetalol Major
- Atenolol + Labetalol Major
- Betaxolol + Labetalol Major
- Bisoprolol + Labetalol Major
Other interactions of Ketamine
Frequently asked questions
Can I take Ketamine with Labetalol?
MediHelp rates the interaction as moderate. Ketamine and Labetalol 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 blood pressure and heart rate through sympathetic stimulation, but in patients with catecholamine depletion or beta-blockade it may act as a myocardial depressant. Combined use may cause hypotension or reduced cardiac output.
How serious is the interaction between Ketamine and Labetalol?
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 continuously during induction and maintenance. Titrate ketamine cautiously and be ready to treat hypotension.
What other medicines interact with Labetalol?
MediHelp also lists interactions of Labetalol with, for example, Amifostine, Amiodarone, Atenolol-chlorthalidone. The full list is on the Labetalol page.
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