Neither Ivermectin nor anything else I know of produces a full cure 100% of the time. (I've seen some of the studies on IVM and cancer; none I've read show anything like 100% efficacy). Life, like the universe itself, is basically statistical. (Is it safe to drive your car? Depends on your definition of "safe.")

A lot of OTC (over the counter) supplements, foods, drugs, and methods produce better and safer results than what the medical industry pushes on patients. Eating right, avoiding poisons (alcohol, tobacco, needless chemical exposure, etc), exercising, and taking a good handful of well-chosen supplements can prevent most illness and can (in many cases) cure a good many illnesses. Many rarely-used (by the medical industry) drugs and supplements offer the same or better rates of success for patients than Big Pharma's patented chemicals, with the bonus of side-benefits instead of harmful or even deadly side-effects.

I believe this, rather than "miracle drugs" with 100% cure rates, is what Q was referring to. I'd be happy to be proven wrong, of course.