Drug interactions
Fenfluramine + Terbutaline
Severity: Moderate
Fenfluramine and Terbutaline: 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
Fenfluramine is a serotonergic agent that can affect heart rate and blood pressure, and terbutaline has sympathomimetic effects. Concurrent use may cause additive tachycardia or blood pressure elevation.
What this interaction means in plain words
Fenfluramine and Terbutaline 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.
Fenfluramine belongs to Central Nervous System; Terbutaline belongs to Respiratory.
Why it happens
Additive pharmacodynamic cardiovascular effects.
What to do
Monitor heart rate and blood pressure and watch for palpitations. Adjust terbutaline dose if cardiovascular effects become 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 Terbutaline
Other interactions of Fenfluramine
- Fenfluramine + Isocarboxazid Contraindicated
- Fenfluramine + Linezolid Contraindicated
- Fenfluramine + Phenelzine Contraindicated
- Fenfluramine + Selegiline Contraindicated
- Fenfluramine + Tranylcypromine Contraindicated
- Almotriptan + Fenfluramine Major
Frequently asked questions
Can I take Fenfluramine with Terbutaline?
MediHelp rates the interaction as moderate. Fenfluramine and Terbutaline 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. Fenfluramine is a serotonergic agent that can affect heart rate and blood pressure, and terbutaline has sympathomimetic effects. Concurrent use may cause additive tachycardia or blood pressure elevation.
How serious is the interaction between Fenfluramine and Terbutaline?
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 and blood pressure and watch for palpitations. Adjust terbutaline dose if cardiovascular effects become troublesome.
What other medicines interact with Terbutaline?
MediHelp also lists interactions of Terbutaline with, for example, Carvedilol, Droperidol, Fexinidazole. The full list is on the Terbutaline page.
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