HCQ, chloroquine have no antiviral effect against any coronavirus: Studies

They found that HCQ showed no substantial antiviral activity, regardless of the timing of treatment initiation, either before infection, soon after infection, or late after infection

Chloroquine and hydroxychloroquine, either alone or in combination with the antibiotic azithromycin, do not show any notable antiviral effect against infections with the novel coronavirus in macaques or human lung cells, according to two new studies in the journal Nature.

Hydroxychloroquine (HCQ) and chloroquine, two drugs, commonly used for the treatment of malaria, have been investigated for their potential to treat Covid-19 in more than 80 registered clinical trials, and have been shown to inhibit the novel coronavirus, SARS-COV-2 infection in cell cultures, the scientists said.

However, they said, the effectiveness of these drugs in the treatment of patients with