(CNN) A new study -- the largest of its kind -- shows that hydroxychloroquine, the drug touted by President Trump, does not work against Covid-19 and could cause heart problems. It follows a study published Thursday in the New England Journal of Medicine that also showed the drug doesn't fight the virus. After statistical adjustments, the death rate for patients taking hydroxychloroquine was similar to those who did not take the drug. The medical society that published that study later said the study "does not meet the Society's expected standard." In this group, doctors prescribed both drugs to 735 patients, just hydroxychloroquine to 271 patients, just azithromycin to 211 patients and neither drug to 221 patients.

Source: CNN May 11, 2020 20:09 UTC