Hydrochlorothiazide and Lisinopril: Drug Interaction Guide
Quick answer: Hydrochlorothiazide and Lisinopril have a minor interaction — typically manageable with awareness.
How Hydrochlorothiazide interacts with Lisinopril
Hydrochlorothiazide reduces plasma volume and activates the renin-angiotensin system, which can enhance the blood pressure-lowering effect of lisinopril. Initial hypotension may occur, especially if volume depleted.
What you should do
Monitor blood pressure, renal function, and electrolytes after initiation or dose changes. Adjust doses if symptomatic hypotension occurs.
Key facts
Severity
Minor — typically manageable
Mechanism
Hydrochlorothiazide reduces plasma volume and activates the renin-angiotensin system, which can enhance the blood pressu...
Action
Monitor blood pressure, renal function, and electrolytes after initiation or dose changes. Adjust doses if symptomatic h...
Frequently asked questions
Can I take Hydrochlorothiazide and Lisinopril together?
Usually yes, with awareness. Monitor blood pressure, renal function, and electrolytes after initiation or dose changes. Adjust doses if symptomatic hypotension occurs.
What is the severity of this interaction?
The interaction between Hydrochlorothiazide and Lisinopril is classified as Minor — typically manageable. Hydrochlorothiazide reduces plasma volume and activates the renin-angiotensin system, which can enhance the blood pressure-lowering effect of lisinopril. Initial hypotension may occur, especially if volume depleted.
What should I do if I'm prescribed both?
Monitor blood pressure, renal function, and electrolytes after initiation or dose changes. Adjust doses if symptomatic hypotension occurs. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.