Drug interactions
Dexfenfluramine + Isoproterenol
Severity: Moderate
Dexfenfluramine and Isoproterenol: 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 drugs have sympathomimetic activity, so combined use may add to increases in heart rate and blood pressure and raise the risk of palpitations or arrhythmia. Isoproterenol is a potent beta agonist, so cardiovascular stimulation may be more pronounced in patients with heart disease.
What this interaction means in plain words
Dexfenfluramine and Isoproterenol 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 pharmacodynamic adrenergic stimulation, with isoproterenol acting directly on beta receptors and dexfenfluramine enhancing serotonergic and adrenergic tone.
What to do
Monitor heart rate, blood pressure and ECG during co-administration, particularly in patients with cardiac disease. Reduce the isoproterenol dose or stop one agent if tachyarrhythmia or hypertension develops.
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 Isoproterenol
Frequently asked questions
Can I take Dexfenfluramine with Isoproterenol?
MediHelp rates the interaction as moderate. Dexfenfluramine and Isoproterenol 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 drugs have sympathomimetic activity, so combined use may add to increases in heart rate and blood pressure and raise the risk of palpitations or arrhythmia. Isoproterenol is a potent beta agonist, so cardiovascular stimulation may be more pronounced in patients with heart disease.
How serious is the interaction between Dexfenfluramine and Isoproterenol?
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 heart rate, blood pressure and ECG during co-administration, particularly in patients with cardiac disease. Reduce the isoproterenol dose or stop one agent if tachyarrhythmia or hypertension develops.
What other medicines interact with Isoproterenol?
MediHelp also lists interactions of Isoproterenol with, for example, Adrenaline-articaine, Bisoprolol, Budesonide-formoterol. The full list is on the Isoproterenol page.
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