Drug interactions
Fluphenazine + Insulin inhaled
Severity: Moderate
Fluphenazine and Insulin inhaled: 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
Phenothiazines can raise blood glucose and impair glycemic control, which may reduce the effectiveness of inhaled insulin. Insulin requirements may increase during fluphenazine therapy.
What this interaction means in plain words
Fluphenazine and Insulin inhaled 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.
Why it happens
Pharmacodynamic antagonism of insulin through reduced insulin sensitivity and secretion; the exact mechanism is not fully established.
What to do
Monitor blood glucose more frequently when fluphenazine is started, changed or stopped, and adjust the insulin dose as needed.
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 Fluphenazine
- Arsenic trioxide + Fluphenazine Contraindicated
- Dofetilide + Fluphenazine Contraindicated
- Fluphenazine + Ibutilide Contraindicated
- Fluphenazine + Pimozide Contraindicated
- Adagrasib + Fluphenazine Major
- Alfentanil + Fluphenazine Major
Frequently asked questions
Can I take Fluphenazine with Insulin inhaled?
MediHelp rates the interaction as moderate. Fluphenazine and Insulin inhaled 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. Phenothiazines can raise blood glucose and impair glycemic control, which may reduce the effectiveness of inhaled insulin. Insulin requirements may increase during fluphenazine therapy.
How serious is the interaction between Fluphenazine and Insulin inhaled?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose more frequently when fluphenazine is started, changed or stopped, and adjust the insulin dose as needed.
What other medicines interact with Fluphenazine?
MediHelp also lists interactions of Fluphenazine with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Fluphenazine page.
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