Drug interactions
Ephedrine + Fluphenazine
Severity: Moderate
Ephedrine 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
Ephedrine is a sympathomimetic that may raise heart rate and blood pressure, whereas phenothiazines such as fluphenazine can cause alpha-blockade, hypotension and some QT effects. Ephedrine may offset sedation or hypotension from fluphenazine, but the net effect is unpredictable, and tachycardia or arrhythmia could occur in susceptible patients.
What this interaction means in plain words
Ephedrine 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.
Ephedrine belongs to Cardiovascular; Fluphenazine belongs to Central Nervous System.
Why it happens
Opposing pharmacodynamic effects: fluphenazine's alpha-adrenergic blockade versus ephedrine's indirect adrenergic stimulation, with possible additive arrhythmic liability.
What to do
Monitor blood pressure, heart rate and rhythm when the two are used together, particularly in patients with heart disease. Titrate ephedrine to response if used to treat fluphenazine-related hypotension.
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
Other interactions of Ephedrine
- Ephedrine + Isocarboxazid Contraindicated
- Ephedrine + Phenelzine Contraindicated
- Ephedrine + Procarbazine Contraindicated
- Ephedrine + Rasagiline Contraindicated
- Ephedrine + Selegiline Contraindicated
- Ephedrine + Tranylcypromine Contraindicated
Frequently asked questions
Can I take Ephedrine with Fluphenazine?
MediHelp rates the interaction as moderate. Ephedrine 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. Ephedrine is a sympathomimetic that may raise heart rate and blood pressure, whereas phenothiazines such as fluphenazine can cause alpha-blockade, hypotension and some QT effects. Ephedrine may offset sedation or hypotension from fluphenazine, but the net effect is unpredictable, and tachycardia or arrhythmia could occur in susceptible patients.
How serious is the interaction between Ephedrine 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: Monitor blood pressure, heart rate and rhythm when the two are used together, particularly in patients with heart disease. Titrate ephedrine to response if used to treat fluphenazine-related hypotension.
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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