On 10 September, the Therapeutic Goods Administration (TGA) banned GPs from prescribing ivermectin for preventing or treating Covid-19, citing ‘a number of significant public health risks associated with taking ivermectin in an attempt to prevent Covid-19 infection rather than getting vaccinated’. In other words it’s meant to promote vaccination. The Food and Drug Administration (FDA) warns Americans against taking ivermectin, a medicine used to deworm livestock: ‘You are not a horse.