Research suggests that ivermectin may work through as many as 20 separate mechanisms. Among them, ivermectin functions as an “ionophore,” facilitating transfer of zinc into the cells, which inhibits viral replication. Ivermectin stops replication of COVID-19, seasonal flu, and many other viruses through this and other mechanisms. For example, a March 2021 study18
Multiple studies noted this.
Ivermectin gums up how Covid works blocking multiple steps in the virus's lifecycle.