Drug interactions
Chlorthalidone + Tiotropium-olodaterol
Severity: Moderate
Chlorthalidone and Tiotropium-olodaterol: 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
Chlorthalidone causes potassium wasting, and olodaterol can further lower serum potassium by driving it into cells. The resulting hypokalemia may provoke arrhythmias, especially in patients with cardiac disease.
What this interaction means in plain words
Chlorthalidone and Tiotropium-olodaterol 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.
Chlorthalidone belongs to Cardiovascular; Tiotropium-olodaterol belongs to Respiratory.
Why it happens
Additive hypokalemia through renal potassium loss and beta2-mediated intracellular shift.
What to do
Monitor serum potassium and magnesium periodically and supplement when low. Take extra care in patients on digoxin or with known arrhythmia.
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 Tiotropium-olodaterol
Other interactions of Chlorthalidone
Frequently asked questions
Can I take Chlorthalidone with Tiotropium-olodaterol?
MediHelp rates the interaction as moderate. Chlorthalidone and Tiotropium-olodaterol 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. Chlorthalidone causes potassium wasting, and olodaterol can further lower serum potassium by driving it into cells. The resulting hypokalemia may provoke arrhythmias, especially in patients with cardiac disease.
How serious is the interaction between Chlorthalidone and Tiotropium-olodaterol?
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 periodically and supplement when low. Take extra care in patients on digoxin or with known arrhythmia.
What other medicines interact with Tiotropium-olodaterol?
MediHelp also lists interactions of Tiotropium-olodaterol with, for example, Amisulpride, Arformoterol, Arsenic trioxide. The full list is on the Tiotropium-olodaterol page.
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