Recently, a small, randomized study in hospitalized COVID-19 adults (n = 22) in China compared lopinavir/ritonavir (lopinavir 400 mg/ritonavir 100 mg twice daily for 10 days) against chloroquine (500 mg twice daily for 10 days) and found that chloroquine was linked to a shorter time to RT-PCR conversion and a faster recovery [100].