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HypertensionAugust 2020Summary reviewed June 2026

What the CALIBRE Trial Found — Candesartan for Memory and Thinking in Older Adults

Researchers compared two blood pressure medicines in older adults with mild memory problems. After one year, people taking candesartan did better on memory and thinking tests than those taking lisinopril, even though both groups had similar blood pressure control.

What the trial was testing

The CALIBRE enrolled 176 patients with hypertension. The study was sponsored by Emory University and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was initial testing (phase 2). Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

Candesartan improved memory recall and problem-solving compared to lisinopril in older adults with mild cognitive impairment.

JAMA network open · 2020 · NCT01984164

These findings — that candesartan showed better results on memory and thinking tests than lisinopril — were published in the JAMA network open and represent the headline result of the study.

Researchers tracked outcomes across 176 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with hypertension, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

Both candesartan and lisinopril are FDA-approved blood pressure medications. This study suggests candesartan may offer extra benefits for memory and thinking in older adults with mild cognitive impairment. If you have high blood pressure and are concerned about memory, talk to your doctor about whether candesartan might be right for you.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.