Drug interactions
Chlorthalidone + Rosiglitazone
Severity: Moderate
Chlorthalidone and Rosiglitazone: 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 so reduce the effect of rosiglitazone. Both drugs can also affect fluid balance, which needs attention in patients at risk of heart failure.
What this interaction means in plain words
Chlorthalidone and Rosiglitazone 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; Rosiglitazone belongs to Endocrine.
Why it happens
Thiazide-induced hypokalemia and impaired glucose tolerance oppose the insulin-sensitizing effect.
What to do
Monitor blood glucose and HbA1c after starting or changing chlorthalidone and adjust therapy 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 Chlorthalidone
Other interactions of Rosiglitazone
- Insulin aspart protamine / insulin aspart + Rosiglitazone Major
- Insulin aspart-insulin aspart protamine + Rosiglitazone Major
- Insulin aspart + Rosiglitazone Major
- Insulin degludec / insulin aspart + Rosiglitazone Major
- Insulin degludec-insulin aspart + Rosiglitazone Major
- Insulin degludec-liraglutide + Rosiglitazone Major
Frequently asked questions
Can I take Chlorthalidone with Rosiglitazone?
MediHelp rates the interaction as moderate. Chlorthalidone and Rosiglitazone 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 so reduce the effect of rosiglitazone. Both drugs can also affect fluid balance, which needs attention in patients at risk of heart failure.
How serious is the interaction between Chlorthalidone and Rosiglitazone?
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 and HbA1c after starting or changing chlorthalidone and adjust therapy as needed.
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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