First hydroxychloroquine, now ivermectin, is the hated deadly drug de jour, castigated by the medical establishment and regulatory authorities. Both drugs have been around for a long time as FDA-approved prescription medications. Yet now we are told they are as deadly as arsenic.

As a physician, I am certainly aware of ivermectin but don't recall ever writing a prescription for it in my 30+ years' medical career. Ivermectin is an anthelmintic, meaning it cures parasitic infections. In my world of ophthalmology, it is used on occasion for rare parasitic or worm infections in the eye.

Ivermectin was FDA approved in 1998 under the brand name Stromectol, produced by pharmaceutical giant Merck, approved for several parasitic infections. The product label described it as having a "unique mode of action," which "leads to an increase in the permeability of the cell membrane to chloride ions." This suggests that ivermectin acts as an ionophore, making cell membranes permeable to ions that enter the cell for therapeutic effect.

Ivermectin is one of several ionophores, others including hydroxychloroquine, quercetin, and resveratrol, the latter two available over the counter. These ionophores simply open a cellular door, allowing zinc to enter the cell, where it then interferes with viral replication, providing potential therapeutic benefit in viral and other infections.

This scientific paper reviews and references other studies demonstrating antibacterial, antiviral, and anticancer properties of ivermectin. This explains the interest in this drug as having potential use in treating COVID.