Drug interactions
Fluphenazine + Saxagliptin-metformin
Severity: Moderate
Fluphenazine and Saxagliptin-metformin: 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
Phenothiazine antipsychotics can impair glucose tolerance and may reduce the effectiveness of antidiabetic therapy. Fluphenazine has a lower metabolic liability than some atypical agents, but hyperglycemia can still occur.
What this interaction means in plain words
Fluphenazine and Saxagliptin-metformin 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.
Fluphenazine belongs to Central Nervous System; Saxagliptin-metformin belongs to Endocrine.
Why it happens
Antipsychotic-related insulin resistance and reduced insulin secretion oppose the glucose-lowering effect.
What to do
Monitor glucose and HbA1c after starting fluphenazine and adjust antidiabetic therapy; watch for hypoglycemia when it is stopped.
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 Saxagliptin-metformin
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 Saxagliptin-metformin?
MediHelp rates the interaction as moderate. Fluphenazine and Saxagliptin-metformin 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. Phenothiazine antipsychotics can impair glucose tolerance and may reduce the effectiveness of antidiabetic therapy. Fluphenazine has a lower metabolic liability than some atypical agents, but hyperglycemia can still occur.
How serious is the interaction between Fluphenazine and Saxagliptin-metformin?
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 glucose and HbA1c after starting fluphenazine and adjust antidiabetic therapy; watch for hypoglycemia when it is stopped.
What other medicines interact with Saxagliptin-metformin?
MediHelp also lists interactions of Saxagliptin-metformin with, for example, Atazanavir, Clozapine, Contrast media. The full list is on the Saxagliptin-metformin page.
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