The U.S. Food and Drug Administration (FDA) authorized the experimental antiviral drug remdesivir, brand name Veklury, for emergency use against COVID-19 in May 2020.

By October 2020, it had received full approval. It remains a primary treatment for COVID-19 in hospitals, despite research showing it lacks effectiveness and can cause high rates of organ failure.

On Twitter, John Beaudoin is calling for a criminal investigation into the drug, citing data that it may have killed 100,000 people in the U.S.

“They know,” he says, “or they willfully refuse to know. Either way, it’s homicide.