Researchers at Monash University in Melbourne, Australia have discovered that the antiparasitic drug Ivermectin can inhibit replication of SARS-CoV-2, the virus the causes COVID-19, according to a study published Friday in the journal Antiviral Research.

“Ivermectin is very widely used and seen as a safe drug. We need to figure out now whether the dosage you can use it at in humans will be effective—that’s the next step,” said the study’s leader Dr. Kylie Wagstaff in a statement.

“We found that even a single dose could essentially remove all viral RNA by 48 hours and that even at 24 hours there was a really significant reduction in it,” she added.