Drug interactions
Methylene blue + Tapentadol
Severity: Contraindicated
Methylene blue and Tapentadol: contraindicated 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
Methylene blue inhibits monoamine oxidase A, and combining it with serotonergic or noradrenergic drugs such as tapentadol can cause serious serotonin syndrome. Tapentadol's labeling also warns against use with MAO inhibitors because of risk of serotonin syndrome and hypertensive crisis.
What this interaction means in plain words
Methylene blue and Tapentadol are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Why it happens
Reversible MAO-A inhibition by methylene blue combined with tapentadol's norepinephrine reuptake inhibition and serotonergic activity.
What to do
Avoid tapentadol in patients receiving methylene blue, and choose an alternative analgesic. If an emergency use of methylene blue is unavoidable, stop tapentadol and monitor closely for serotonin syndrome.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Tapentadol
- Calcium / magnesium / potassium / sodium oxybates + Tapentadol Contraindicated
- Isocarboxazid + Tapentadol Contraindicated
- Linezolid + Tapentadol Contraindicated
- Olanzapine / samidorphan + Tapentadol Contraindicated
- Phenelzine + Tapentadol Contraindicated
- Procarbazine + Tapentadol Contraindicated
Frequently asked questions
Can I take Methylene blue with Tapentadol?
MediHelp rates the interaction as contraindicated. Methylene blue and Tapentadol are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Methylene blue inhibits monoamine oxidase A, and combining it with serotonergic or noradrenergic drugs such as tapentadol can cause serious serotonin syndrome. Tapentadol's labeling also warns against use with MAO inhibitors because of risk of serotonin syndrome and hypertensive crisis.
How serious is the interaction between Methylene blue and Tapentadol?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid tapentadol in patients receiving methylene blue, and choose an alternative analgesic. If an emergency use of methylene blue is unavoidable, stop tapentadol and monitor closely for serotonin syndrome.
What other medicines interact with Tapentadol?
MediHelp also lists interactions of Tapentadol with, for example, Calcium / magnesium / potassium / sodium oxybates, Isocarboxazid, Linezolid. The full list is on the Tapentadol page.
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