Drug interactions
Dexmedetomidine + Morphine
Severity: Moderate
Dexmedetomidine and Morphine: 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
Dexmedetomidine produces sedation and analgesia and has an opioid-sparing effect, so combined use with morphine increases sedation and may cause bradycardia, hypotension and respiratory depression. The combination is used deliberately in critical care but needs dose reduction.
What this interaction means in plain words
Dexmedetomidine and Morphine 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.
Dexmedetomidine belongs to Central Nervous System; Morphine belongs to Musculoskeletal.
Why it happens
Additive sedative and analgesic effects through alpha-2 agonism and opioid receptor agonism, with additive hemodynamic depression.
What to do
Reduce the dose of morphine or dexmedetomidine as needed and monitor heart rate, blood pressure, sedation and respiration continuously.
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 Morphine
- Alvimopan + Morphine Contraindicated
- Isocarboxazid + Morphine Contraindicated
- Morphine + Olanzapine / samidorphan Contraindicated
- Morphine + Phenelzine Contraindicated
- Morphine + Tranylcypromine Contraindicated
- Alfentanil + Morphine Major
Other interactions of Dexmedetomidine
Frequently asked questions
Can I take Dexmedetomidine with Morphine?
MediHelp rates the interaction as moderate. Dexmedetomidine and Morphine 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. Dexmedetomidine produces sedation and analgesia and has an opioid-sparing effect, so combined use with morphine increases sedation and may cause bradycardia, hypotension and respiratory depression. The combination is used deliberately in critical care but needs dose reduction.
How serious is the interaction between Dexmedetomidine and Morphine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reduce the dose of morphine or dexmedetomidine as needed and monitor heart rate, blood pressure, sedation and respiration continuously.
What other medicines interact with Morphine?
MediHelp also lists interactions of Morphine with, for example, Alvimopan, Isocarboxazid, Olanzapine / samidorphan. The full list is on the Morphine page.
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