Drug interactions
Hydrochlorothiazide + Insulin regular human
Severity: Moderate
Hydrochlorothiazide and Insulin regular human: 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
Hydrochlorothiazide can worsen glycemic control and diminish the response to insulin. Insulin requirements may rise, particularly at higher thiazide doses.
What this interaction means in plain words
Hydrochlorothiazide and Insulin regular human 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-induced hypokalemia and impaired insulin secretion and sensitivity antagonize insulin effect.
What to do
Check blood glucose more often after starting or adjusting hydrochlorothiazide and titrate insulin accordingly. Correct hypokalemia if present.
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 Hydrochlorothiazide
Frequently asked questions
Can I take Hydrochlorothiazide with Insulin regular human?
MediHelp rates the interaction as moderate. Hydrochlorothiazide and Insulin regular human 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. Hydrochlorothiazide can worsen glycemic control and diminish the response to insulin. Insulin requirements may rise, particularly at higher thiazide doses.
How serious is the interaction between Hydrochlorothiazide and Insulin regular human?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check blood glucose more often after starting or adjusting hydrochlorothiazide and titrate insulin accordingly. Correct hypokalemia if present.
What other medicines interact with Hydrochlorothiazide?
MediHelp also lists interactions of Hydrochlorothiazide with, for example, Dofetilide, Amifostine, Amiodarone. The full list is on the Hydrochlorothiazide page.
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