I've been using Dr Z's prophylactic protocol -- 0.2 MG of IVM per KG of weight, twice per week, Days 1 and 3. (I picked Sunday and Tuesday.)

I'd tried going down to just once per week, but after a month or so, the b.p. started to creep up again, so I went back to twice per week dosing.

Side note -- my area (northern lefty "sanctuary" city) now has malaria cases, so I've also put myself on HCQ prophlactically -- 200 mg once a week.