Drug interactions
Morphine + Tramadol
Severity: Moderate
Morphine and Tramadol: 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
Tramadol is a partial opioid agonist with serotonergic and noradrenergic activity, and combining it with morphine adds to sedation and respiratory depression. Tramadol also increases seizure and serotonin syndrome risk, and its use alongside a full agonist offers little analgesic advantage.
What this interaction means in plain words
Morphine and Tramadol 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.
Morphine belongs to Musculoskeletal; Tramadol belongs to Musculoskeletal.
Why it happens
Additive mu-opioid receptor effects with added serotonergic and seizure-threshold effects from tramadol.
What to do
Avoid routine duplication of opioids; if both are needed, use the lowest doses and monitor for sedation, respiratory depression and serotonin toxicity.
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 Tramadol
- Isocarboxazid + Tramadol Contraindicated
- Olanzapine / samidorphan + Tramadol Contraindicated
- Phenelzine + Tramadol Contraindicated
- Procarbazine + Tramadol Contraindicated
- Rasagiline + Tramadol Contraindicated
- Safinamide + Tramadol Contraindicated
Frequently asked questions
Can I take Morphine with Tramadol?
MediHelp rates the interaction as moderate. Morphine and Tramadol 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. Tramadol is a partial opioid agonist with serotonergic and noradrenergic activity, and combining it with morphine adds to sedation and respiratory depression. Tramadol also increases seizure and serotonin syndrome risk, and its use alongside a full agonist offers little analgesic advantage.
How serious is the interaction between Morphine and Tramadol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine duplication of opioids; if both are needed, use the lowest doses and monitor for sedation, respiratory depression and serotonin toxicity.
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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