The dose per weight is the same for a horse as a human. So a 1250 pound human would use the entire tube of the Durvet brand.
I’m about 200 pounds so I just took a ruler and marked the plunger into 6 different equal lengths and plunged it to the mark for each dose. As a preventative it was two doses spaced 48 hours apart to begin with and then a dose every two weeks.
By chance I had a physical a month after I started and my chronic low white blood count was even lower. I looked it up and that is a side effect of Ivermectin. No adverse physical issues. The low WBC is probably from something else, but in retrospect it may have been better to work with a doctor (online?) than trying to self medicate.
Good info. Thanks.