Drug interactions
Arformoterol + Lofexidine
Severity: Moderate
Arformoterol and Lofexidine: 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 may prolong the QT interval, and beta-agonists can lower potassium and raise heart rate. Combined use may raise the risk of arrhythmia, particularly in those with cardiac disease or electrolyte disturbance.
What this interaction means in plain words
Arformoterol and Lofexidine 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.
Arformoterol belongs to Respiratory; Lofexidine belongs to Central Nervous System.
Why it happens
Additive QT prolongation, with beta-agonist related hypokalemia.
What to do
Obtain a baseline ECG and correct potassium and magnesium; monitor ECG in patients with cardiac risk factors.
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 Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Lofexidine?
MediHelp rates the interaction as moderate. Arformoterol and Lofexidine 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 may prolong the QT interval, and beta-agonists can lower potassium and raise heart rate. Combined use may raise the risk of arrhythmia, particularly in those with cardiac disease or electrolyte disturbance.
How serious is the interaction between Arformoterol and Lofexidine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and correct potassium and magnesium; monitor ECG in patients with cardiac risk factors.
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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