I took Ivermectin for 1 week, the horse syringe one.
I noticed some days later that my torso became extremely itchy and was covered with open wounds from scratching. Parasites trying to escape perhaps?
As I'm writing this, the wounds are going away and my body is less itchy.
Will try Ivermectin again. If I'm using the horse syringe one again, I would take it just once at a ~500 lbs dosage (almost half the syringe). And I'd repeat if necessary a couple of months later.