Drug interactions
Chlorthalidone + Insulin inhaled
Severity: Moderate
Chlorthalidone and Insulin inhaled: 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 can raise blood glucose and blunt the response to insulin in people with diabetes. Insulin dose needs may rise when the diuretic is started and fall when it is withdrawn.
What this interaction means in plain words
Chlorthalidone and Insulin inhaled 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.
Why it happens
Thiazide-type diuretics reduce insulin sensitivity and secretion, partly via hypokalemia, opposing insulin's glucose-lowering effect.
What to do
Monitor blood glucose closely when chlorthalidone is started, stopped or adjusted and titrate insulin as needed. Keep serum potassium within normal range.
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 Chlorthalidone
Frequently asked questions
Can I take Chlorthalidone with Insulin inhaled?
MediHelp rates the interaction as moderate. Chlorthalidone and Insulin inhaled 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 can raise blood glucose and blunt the response to insulin in people with diabetes. Insulin dose needs may rise when the diuretic is started and fall when it is withdrawn.
How serious is the interaction between Chlorthalidone and Insulin inhaled?
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 blood glucose closely when chlorthalidone is started, stopped or adjusted and titrate insulin as needed. Keep serum potassium within normal range.
What other medicines interact with Chlorthalidone?
MediHelp also lists interactions of Chlorthalidone with, for example, Amifostine, Atenolol-chlorthalidone, Candesartan-hydrochlorothiazide. The full list is on the Chlorthalidone page.
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