Drug interactions
Azilsartan-chlorthalidone + Potassium citrate / citric acid
Severity: Major
Azilsartan-chlorthalidone and Potassium citrate / citric acid: major 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
Azilsartan reduces aldosterone-mediated potassium excretion, and potassium supplements add to the potassium load. This can cause hyperkalemia, particularly in patients with renal impairment or diabetes, although chlorthalidone partly counteracts it.
What this interaction means in plain words
Azilsartan-chlorthalidone and Potassium citrate / citric acid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
ARB-induced reduction in aldosterone-dependent renal potassium excretion combined with exogenous potassium intake.
What to do
Check serum potassium and renal function before and shortly after starting the potassium supplement, then periodically. Avoid use in patients with renal impairment or hyperkalemia.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Azilsartan-chlorthalidone
Frequently asked questions
Can I take Azilsartan-chlorthalidone with Potassium citrate / citric acid?
MediHelp rates the interaction as major. Azilsartan-chlorthalidone and Potassium citrate / citric acid can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Azilsartan reduces aldosterone-mediated potassium excretion, and potassium supplements add to the potassium load. This can cause hyperkalemia, particularly in patients with renal impairment or diabetes, although chlorthalidone partly counteracts it.
How serious is the interaction between Azilsartan-chlorthalidone and Potassium citrate / citric acid?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium and renal function before and shortly after starting the potassium supplement, then periodically. Avoid use in patients with renal impairment or hyperkalemia.
What other medicines interact with Azilsartan-chlorthalidone?
MediHelp also lists interactions of Azilsartan-chlorthalidone with, for example, Aliskiren, Sparsentan, Aceclofenac. The full list is on the Azilsartan-chlorthalidone page.
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