Posaconazole and Triazolam interaction
Posaconazole and Triazolam: 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 Triazolam label · effective 2026-07-10
Strong CYP 3A Inhibitors Triazolam is contraindicated in patients receiving strong inhibitors of CYP 3A such as ketoconazole, itraconazole, nefazodone, ritonavir, indinavir, nelfinavir, saquinavir, and lopinavir [see Contraindications (4) , Drug Interactions (7.1) ] .
Prevention or management Do not administer triazolam with a strong CYP3A4 inhibitor [see Contraindications (4) , Warnings and Precautions (5.8) ].
Moderate and Weak CYP 3A Inhibitors Triazolam should be used with caution in patients receiving moderate or weak inhibitors of CYP 3A.
• Use with CYP 3A4 Inhibitors : Increased risk of adverse reactions ( 4 , 5.8 , 7.1 )
Strong Inhibitors of CYP 3A Clinical implication Concomitant use of triazolam with strong CYP3A inhibitors has a profound effect on the clearance of triazolam, resulting in increased concentrations of triazolam and increased risk of adverse reactions [see Clinical Pharmacology (12.3) ].
From the Posaconazole (NOXAFIL) label · effective 2026-02-13
Concomitant Use with Midazolam : Noxafil can prolong hypnotic/sedative effects.
Monitor patients and benzodiazepine receptor antagonists should be available.
Increased plasma midazolam concentrations could potentiate and prolong hypnotic and sedative effects.
Patients must be monitored closely for adverse effects associated with high plasma concentrations of midazolam and benzodiazepine receptor antagonists must be available to reverse these effects [see Drug Interactions (7.2) and Clinical Pharmacology (12.3) ] .
Benzodiazepines that are CYP3A4 Substrates Mechanism and Clinical Effect(s) Concomitant use of posaconazole with midazolam increased midazolam plasma concentrations which could potentiate and prolong hypnotic and sedative effects [see Clinical Pharmacology (12.3) ] .
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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.