Diazepam and Morphine: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Diazepam and Morphine unless specifically directed by your doctor.
How Diazepam interacts with Morphine
Benzodiazepine GABA-A potentiation and opioid mu-receptor agonism produce additive CNS and respiratory depression.
What you should do
Avoid routine co-prescribing; if unavoidable, use the lowest effective doses, limit duration, monitor sedation and respiration, and consider naloxone provision.
Key facts
Severity
Major — avoid combination
Mechanism
Benzodiazepine GABA-A potentiation and opioid mu-receptor agonism produce additive CNS and respiratory depression.
Action
Avoid routine co-prescribing; if unavoidable, use the lowest effective doses, limit duration, monitor sedation and respi...
Frequently asked questions
Can I take Diazepam and Morphine together?
No — this combination should generally be avoided. Avoid routine co-prescribing; if unavoidable, use the lowest effective doses, limit duration, monitor sedation and respiration, and consider naloxone provision.
What is the severity of this interaction?
The interaction between Diazepam and Morphine is classified as Major — avoid combination. Benzodiazepine GABA-A potentiation and opioid mu-receptor agonism produce additive CNS and respiratory depression.
What should I do if I'm prescribed both?
Avoid routine co-prescribing; if unavoidable, use the lowest effective doses, limit duration, monitor sedation and respiration, and consider naloxone provision. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.