Researchers find losartan is not effective in reducing hospitalization from mild COVID-19

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The common blood pressure medication also does not appear to have any significant harmful side effects on patients with COVID-19

MINNEAPOLIS/ST. PAUL (06/18/2021) — University of Minnesota Medical School researchers determined that the common blood pressure medication, losartan, is not effective in reducing hospitalization for mildly-ill COVID-19 outpatients.

In the multicenter, randomized, double-blinded clinical trial, non-hospitalized patients recently diagnosed with COVID-19 were given either losartan or a placebo and monitored for 15 days. The study’s results, which were published in EClinicalMedicine, showed that although losartan does not reduce the likelihood of hospitalization, the medication does not appear to worsen symptoms of COVID-19 or have any significant or harmful side effects on patients with mild COVID-19.

“Based on our results, there is no benefit to starting losartan for newly diagnosed outpatients with COVID-19, but those who are already taking the medication for pre-existing health conditions should feel safe continuing it,” said Michael Puskarich, MD, an associate professor in the Department of Emergency Medicine at the U of M Medical School and co-principal investigator of this study. He is also an emergency physician at Hennepin Healthcare.

Conflicting hypotheses since the start of the pandemic led this research team to investigate losartan as a potential treatment option. While some experts believed drugs like losartan may reduce inflammation and help those infected recover, others worried that the drug could worsen COVID-19 symptoms.

“Given SARS-CoV-2 binding with ACE2 there has been significant research interest into the utility of ACE and AT1R blocking agents to combat COVID-19. This study provides insight that for patients with mild COVID-19, who do not require hospital admission, that there is no benefit or harm from such agents,” said co-principal investigator Christopher Tignanelli, MD, MS, an assistant professor in the Department of Surgery at the U of M Medical School and critical care surgeon with M Health Fairview.

The same team has been working on another trial for inpatients to evaluate if losartan prevents lung injury in hospitalized patients with COVID-19 pneumonia. They have completed enrollment and are currently analyzing the data.

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About the University of Minnesota Medical School

The University of Minnesota Medical School is at the forefront of learning and discovery, transforming medical care and educating the next generation of physicians. Our graduates and faculty produce high-impact biomedical research and advance the practice of medicine. We acknowledge that the U of M Medical School, both the Twin Cities campus and Duluth campus, is located on traditional, ancestral and contemporary lands of the Dakota and the Ojibwe, and scores of other Indigenous people, and we affirm our commitment to tribal communities and their sovereignty as we seek to improve and strengthen our relations with tribal nations. For more information about the U of M Medical School, please visit med.umn.edu.

Media Contact
Kelly Glynn
[email protected]
http://dx.doi.org/10.1016/j.eclinm.2021.100957

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