Drug interactions
Carvedilol + Chlorothiazide
Severity: Minor
Carvedilol and Chlorothiazide: minor 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
Thiazide diuretics lower serum potassium and may add to the blood pressure lowering of carvedilol, which is often beneficial. Thiazides can also worsen glucose and lipid control, and beta blockers may mask hypoglycemia symptoms.
What this interaction means in plain words
Carvedilol and Chlorothiazide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Carvedilol belongs to Cardiovascular; Chlorothiazide belongs to Cardiovascular.
Why it happens
Additive antihypertensive effect; thiazide-induced potassium loss and volume depletion.
What to do
Monitor blood pressure, serum potassium and glucose periodically. Adjust doses if hypotension or electrolyte disturbance develops.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Carvedilol
Other interactions of Chlorothiazide
Frequently asked questions
Can I take Carvedilol with Chlorothiazide?
MediHelp rates the interaction as minor. Carvedilol and Chlorothiazide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Thiazide diuretics lower serum potassium and may add to the blood pressure lowering of carvedilol, which is often beneficial. Thiazides can also worsen glucose and lipid control, and beta blockers may mask hypoglycemia symptoms.
How serious is the interaction between Carvedilol and Chlorothiazide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, serum potassium and glucose periodically. Adjust doses if hypotension or electrolyte disturbance develops.
What other medicines interact with Carvedilol?
MediHelp also lists interactions of Carvedilol with, for example, Amifostine, Amiodarone, Arformoterol. The full list is on the Carvedilol page.
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