Drug interactions
Methohexital + Tapentadol
Severity: Major
Methohexital and Tapentadol: major interaction.
Last updated Sources: US FDA label
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
Methohexital is a barbiturate anesthetic that causes dose-dependent CNS and respiratory depression. Given with an opioid such as tapentadol, sedation, hypotension and respiratory depression are intensified.
What this interaction means in plain words
Methohexital and Tapentadol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Methohexital belongs to Central Nervous System; Tapentadol belongs to Musculoskeletal.
Why it happens
Additive CNS depression from GABA-A potentiation by methohexital and mu-opioid agonism by tapentadol.
What to do
Use only in a monitored setting with airway and ventilation support available, and reduce methohexital and opioid doses when combined. Continuously monitor oxygen saturation, respiratory rate and blood pressure.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Tapentadol
- Calcium / magnesium / potassium / sodium oxybates + Tapentadol Contraindicated
- Isocarboxazid + Tapentadol Contraindicated
- Linezolid + Tapentadol Contraindicated
- Methylene blue + Tapentadol Contraindicated
- Olanzapine / samidorphan + Tapentadol Contraindicated
- Phenelzine + Tapentadol Contraindicated
Other interactions of Methohexital
Frequently asked questions
Can I take Methohexital with Tapentadol?
MediHelp rates the interaction as major. Methohexital and Tapentadol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Methohexital is a barbiturate anesthetic that causes dose-dependent CNS and respiratory depression. Given with an opioid such as tapentadol, sedation, hypotension and respiratory depression are intensified.
How serious is the interaction between Methohexital and Tapentadol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use only in a monitored setting with airway and ventilation support available, and reduce methohexital and opioid doses when combined. Continuously monitor oxygen saturation, respiratory rate and blood pressure.
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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