Drug interactions
Fluphenazine + Olopatadine intranasal
Severity: Moderate
Fluphenazine and Olopatadine intranasal: 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 can cause drowsiness, and intranasal olopatadine is absorbed enough to produce sedation in some patients. Combined with fluphenazine, impaired alertness and psychomotor performance may be greater, affecting driving and daily activities.
What this interaction means in plain words
Fluphenazine and Olopatadine intranasal 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
Additive central nervous system depression from the antihistamine and the phenothiazine, both of which block histamine H1 receptors.
What to do
Counsel patients about additive drowsiness and advise against driving or operating machinery until the response is known. Consider a non-sedating alternative or reduce the dose if sedation is troublesome.
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 Olopatadine intranasal?
MediHelp rates the interaction as moderate. Fluphenazine and Olopatadine intranasal 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 can cause drowsiness, and intranasal olopatadine is absorbed enough to produce sedation in some patients. Combined with fluphenazine, impaired alertness and psychomotor performance may be greater, affecting driving and daily activities.
How serious is the interaction between Fluphenazine and Olopatadine intranasal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel patients about additive drowsiness and advise against driving or operating machinery until the response is known. Consider a non-sedating alternative or reduce the dose if sedation is troublesome.
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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