Drug interactions
Alprazolam + Fluphenazine
Severity: Moderate
Alprazolam and Fluphenazine: moderate interaction.
Last updated
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
Both agents cause sedation, so combined use can lead to additive drowsiness, psychomotor impairment and dizziness. Orthostatic hypotension may also be more pronounced.
What this interaction means in plain words
Alprazolam and Fluphenazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Alprazolam belongs to Central Nervous System; Fluphenazine belongs to Central Nervous System.
Why it happens
Additive CNS depression from benzodiazepine GABA-A enhancement and the sedating antihistaminic and antidopaminergic effects of the phenothiazine.
What to do
Start with low doses and titrate carefully, monitoring for oversedation and low blood pressure. Advise patients to avoid alcohol and hazardous tasks.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Alprazolam
- Alprazolam + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Alprazolam + Itraconazole Contraindicated
- Alprazolam + Ketoconazole Contraindicated
- Alprazolam + Levoketoconazole Contraindicated
- Alprazolam + Sodium oxybate Contraindicated
- Alfentanil + Alprazolam Major
Other interactions of Fluphenazine
Frequently asked questions
Can I take Alprazolam with Fluphenazine?
MediHelp rates the interaction as moderate. Alprazolam and Fluphenazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both agents cause sedation, so combined use can lead to additive drowsiness, psychomotor impairment and dizziness. Orthostatic hypotension may also be more pronounced.
How serious is the interaction between Alprazolam and Fluphenazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with low doses and titrate carefully, monitoring for oversedation and low blood pressure. Advise patients to avoid alcohol and hazardous tasks.
What other medicines interact with Alprazolam?
MediHelp also lists interactions of Alprazolam with, for example, Calcium / magnesium / potassium / sodium oxybates, Itraconazole, Ketoconazole. The full list is on the Alprazolam page.
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