Diflucan 150 mg (Fluconazole) and Xanax (Alprazolam) (Xanax 0.5 mg): interaction and safety
This source-based reference is not a personal treatment recommendation. The relevance and management of an interaction depend on the exact products, route, dose and clinical situation.
Interaction mechanism
Systemic fluconazole can inhibit CYP3A4-mediated alprazolam clearance and increase alprazolam adverse effects.
Clinical significance and safety
Diflucan (systemic fluconazole) can increase Xanax (alprazolam) exposure through inhibition of CYP3A4. More pronounced sleepiness, slowed reactions and falls may follow. Fluconazole is a moderate CYP3A4 inhibitor; it should not be described as interchangeable with every strong azole inhibitor. The alprazolam label advises avoidance and clinician-directed dose review with moderate or weak inhibitors, while the fluconazole information recommends monitoring CYP-metabolised short-acting benzodiazepines. The magnitude depends on dose, duration and patient factors; no specific increase is claimed for a single 150 mg capsule. Have the prescriber or pharmacist review the combination before use.
Using this information
This is a source-based reference record, not a recommendation to combine, stop or change medicines. A missing interaction record does not establish safe use. A qualified healthcare professional should consider the exact products, doses, other medicines and individual health circumstances.