Drug interactions
Captopril-hydrochlorothiazide + Colestipol
Severity: Moderate
Captopril-hydrochlorothiazide and Colestipol: 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
Colestipol binds hydrochlorothiazide in the gut and reduces its absorption, which can weaken the diuretic and antihypertensive effect. The effect applies to oral dosing when taken together.
What this interaction means in plain words
Captopril-hydrochlorothiazide and Colestipol 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.
Captopril-hydrochlorothiazide belongs to Cardiovascular; Colestipol belongs to Cardiovascular.
Why it happens
Bile acid sequestrant binds the thiazide in the gastrointestinal tract, reducing absorption.
What to do
Give the combination tablet at least 4 hours before colestipol, or 1 hour before at the minimum, and monitor blood pressure.
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 Captopril-hydrochlorothiazide
- Aliskiren + Captopril-hydrochlorothiazide Contraindicated
- Captopril-hydrochlorothiazide + Dofetilide Contraindicated
- Captopril-hydrochlorothiazide + Sacubitril / valsartan Contraindicated
- Aceclofenac + Captopril-hydrochlorothiazide Major
- Aldesleukin + Captopril-hydrochlorothiazide Major
- Amifostine + Captopril-hydrochlorothiazide Major
Other interactions of Colestipol
- Amlodipine-hydrochlorothiazide-valsartan + Colestipol Moderate
- Amlodipine-olmesartan-hydrochlorothiazide + Colestipol Moderate
- Atenolol-chlorthalidone + Colestipol Moderate
- Azilsartan-chlorthalidone + Colestipol Moderate
- Candesartan-hydrochlorothiazide + Colestipol Moderate
- Chenodeoxycholic acid + Colestipol Moderate
Frequently asked questions
Can I take Captopril-hydrochlorothiazide with Colestipol?
MediHelp rates the interaction as moderate. Captopril-hydrochlorothiazide and Colestipol 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. Colestipol binds hydrochlorothiazide in the gut and reduces its absorption, which can weaken the diuretic and antihypertensive effect. The effect applies to oral dosing when taken together.
How serious is the interaction between Captopril-hydrochlorothiazide and Colestipol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give the combination tablet at least 4 hours before colestipol, or 1 hour before at the minimum, and monitor blood pressure.
What other medicines interact with Captopril-hydrochlorothiazide?
MediHelp also lists interactions of Captopril-hydrochlorothiazide with, for example, Aliskiren, Dofetilide, Sacubitril / valsartan. The full list is on the Captopril-hydrochlorothiazide page.
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