Drug interactions
Salmeterol + Torsemide
Severity: Moderate
Salmeterol and Torsemide: 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 the beta-2 agonist and the loop diuretic can lower serum potassium. Used together, especially at higher doses or in patients with heart disease, hypokalemia may become significant and predispose to arrhythmias.
What this interaction means in plain words
Salmeterol and Torsemide 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.
Salmeterol belongs to Respiratory; Torsemide belongs to Cardiovascular.
Why it happens
Additive hypokalemia from beta-2 stimulated intracellular potassium shift and diuretic-induced renal potassium loss.
What to do
Monitor serum potassium and magnesium, particularly at treatment start and in patients with cardiac disease. Replace potassium as needed.
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 Salmeterol
- Ritonavir + Salmeterol Contraindicated
- Salmeterol + Saquinavir Contraindicated
- Amitriptyline + Salmeterol Major
- Arformoterol + Salmeterol Major
- Atazanavir + Salmeterol Major
- Budesonide-formoterol + Salmeterol Major
Other interactions of Torsemide
Frequently asked questions
Can I take Salmeterol with Torsemide?
MediHelp rates the interaction as moderate. Salmeterol and Torsemide 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 the beta-2 agonist and the loop diuretic can lower serum potassium. Used together, especially at higher doses or in patients with heart disease, hypokalemia may become significant and predispose to arrhythmias.
How serious is the interaction between Salmeterol and Torsemide?
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 serum potassium and magnesium, particularly at treatment start and in patients with cardiac disease. Replace potassium as needed.
What other medicines interact with Salmeterol?
MediHelp also lists interactions of Salmeterol with, for example, Ritonavir, Saquinavir, Amitriptyline. The full list is on the Salmeterol page.
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