Midazolam and Trifluoperazine interaction
Midazolam and Trifluoperazine: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Midazolam (Midazolam in Sodium Chloride) label · effective 2025-03-02
WARNING: PERSONNEL AND EQUIPMENT FOR MONITORING AND RESUSCITATION AND RISKS FROM CONCOMITANT USE WITH OPIOID ANALGESICS AND OTHER SEDATIVE-HYPNOTICS Personnel and Equipment for Monitoring and Resuscitation Only personnel trained in the administration of procedural sedation, and not involved in the conduct of the diagnostic or therapeutic procedure, should administer…
Risks from Concomitant Use with Opioid Analgesics and Other Sedative Hypnotics Concomitant use of benzodiazepines, including Midazolam in 0.9% Sodium Chloride Injection, and opioids may result in profound sedation, respiratory depression, coma, and death.
WARNING: PERSONNEL AND EQUIPMENT FOR MONITORING AND RESUSCITATION, AND RISKS FROM CONCOMITANT USE WITH OPIOID ANALGESICS AND OTHER SEDATIVE-HYPNOTICS See full prescribing information for complete boxed warning.
Risks from Concomitant Use with Opioids, Other Sedative Hypnotics, or Other Central Nervous System Depressants Concomitant use of benzodiazepines and opioids may result in profound sedation, respiratory depression, coma, and death.
Opioid Analgesics and Other Sedative Hypnotics: Risk of respiratory depression is increased ( 7.1 )
From the Trifluoperazine (Trifluoperazine Hydrochloride) label · effective 2026-01-30
CONTRAINDICATIONS A known hypersensitivity to phenothiazines, comatose or greatly depressed states due to central nervous system depressants and, in cases of existing blood dyscrasias, bone marrow depression and preexisting liver damage.
If agents such as sedatives, narcotics, anesthetics, tranquilizers or alcohol are used either simultaneously or successively with the drug, the possibility of an undesirable additive depressant effect should be considered.
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.