Ivermectin – How Does It Work?

Reference book: Goodman & Gilman’s: The Pharmacological Basis of Therapeutics, 13e

Ivermectin against SARS-COV-2 study

The FDA-approved drug ivermectin inhibits the replication of SARS-CoV-2 in vitro

Excerpts
A single treatment able to effect ~5000-fold reduction in virus at 48 h in cell culture.

Ivermectin’s mechanism of action against invertebrates

Arthropod ectoparasite infestations such as scabies. Its principal indications are for treatment of onchocerciasis and strongyloidiasis. 

WebMD article