Drug interactions
Norepinephrine + Olanzapine
Severity: Moderate
Norepinephrine and Olanzapine: 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
Olanzapine blocks alpha-1 receptors and may blunt the pressor response to norepinephrine, so higher infusion rates might be needed in a hypotensive patient. The effect is mainly relevant in acute care settings.
What this interaction means in plain words
Norepinephrine and Olanzapine 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.
Why it happens
Pharmacodynamic antagonism at alpha-1 adrenergic receptors.
What to do
Titrate norepinephrine to blood pressure targets and expect that larger doses may be needed. Review the need for olanzapine in patients with refractory 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 Olanzapine
Frequently asked questions
Can I take Norepinephrine with Olanzapine?
MediHelp rates the interaction as moderate. Norepinephrine and Olanzapine 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. Olanzapine blocks alpha-1 receptors and may blunt the pressor response to norepinephrine, so higher infusion rates might be needed in a hypotensive patient. The effect is mainly relevant in acute care settings.
How serious is the interaction between Norepinephrine and Olanzapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate norepinephrine to blood pressure targets and expect that larger doses may be needed. Review the need for olanzapine in patients with refractory hypotension.
What other medicines interact with Olanzapine?
MediHelp also lists interactions of Olanzapine with, for example, Amisulpride, Amoxapine, Apomorphine. The full list is on the Olanzapine page.
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