Drug interactions
Fenfluramine + Lofexidine
Severity: Minor
Fenfluramine and Lofexidine: minor 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 can cause somnolence and also has cardiovascular effects, while lofexidine causes sedation and lowers blood pressure and heart rate. The overall interaction is unclear and likely modest.
What this interaction means in plain words
Fenfluramine and Lofexidine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Fenfluramine belongs to Central Nervous System; Lofexidine belongs to Central Nervous System.
Why it happens
Possible overlapping CNS effects; no well-established mechanism.
What to do
Monitor sedation, heart rate and blood pressure when starting or adjusting either drug.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
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 Lofexidine?
MediHelp rates the interaction as minor. Fenfluramine and Lofexidine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Fenfluramine can cause somnolence and also has cardiovascular effects, while lofexidine causes sedation and lowers blood pressure and heart rate. The overall interaction is unclear and likely modest.
How serious is the interaction between Fenfluramine and Lofexidine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor sedation, heart rate and blood pressure when starting or adjusting either drug.
What other medicines interact with Lofexidine?
MediHelp also lists interactions of Lofexidine with, for example, Adagrasib, Alfuzosin, Amiodarone. The full list is on the Lofexidine page.
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