Benazepril and hydrochlorothiazide and Chlorothiazide interaction
Benazepril and hydrochlorothiazide and Chlorothiazide: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Chlorothiazide (DIURIL) label · effective 2021-11-01
Thiazides may add to or potentiate the action of other antihypertensive drugs.
Other Antihypertensive Drugs - additive effect or potentiation.
…renal function (e.g., elderly patients or patients who are volume-depleted, including those on diuretic therapy) who are being treated with NSAIDs, including selective COX-2 inhibitors, the co-administration of angiotensin II receptor antagonists or ACE inhibitors may result in a further deterioration of renal function, including possible acute renal failure.
These interactions should be considered in patients taking NSAIDs including selective COX-2 inhibitors concomitantly with diuretics and angiotensin II antagonists or ACE inhibitors.
From the Benazepril and hydrochlorothiazide (Lotensin HCT) label · effective 2026-02-24
The thiazide component of Lotensin HCT may potentiate the action of other antihypertensive drugs, especially ganglionic or peripheral adrenergic-blocking drugs.
Lotensin HCT should be used cautiously in patients receiving concomitant therapy with other antihypertensives.
Most epidemiologic studies examining fetal abnormalities after exposure to antihypertensive use in the first trimester have not distinguished drugs affecting the renin-angiotensin system from other antihypertensive agents.
Thiazides can cross the placenta, and concentrations reached in the umbilical vein approach those in the maternal plasma Hydrochlorothiazide, like other diuretics, can cause placental hypoperfusion.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.