And your signon id is “Equine****” so it seems you speak from experience.
I had a horse or two in my 73 years of life. I had ivermectin for horses in my house for years before covid. My wife and I got covid the spring when this bs started. We took the recommended amount according to our weight and passed through the sickness fine. If you take the dewormer, use a brownie or cookie and juice. The apple flavored kind isn’t really very apple ie. It’s not bad but horses have different taste capabilities than me. However we both like the same carrots and apples. Be safe. Regards.