I heard about Ivermectin for the first time this week and was shocked how much it seemed that I had stepped into conspiracy theory land. There seemed to be an overwhelming amount of evidence over the last year that this repurposed drug is effective at treating Covid during a variety of stages (preventative, first positive test, ICU admittance, and even long haul). But since there hadn't been a randomized trial the dr…
Without randomized trials you cannot recommend a drug because you cannot exclude confounders. It seems wrong to me to even speak of "overwhelming evidence" without a randomized trial or other sound ways to control or identify for confounders (e.g. causal models).
I’ve included every double-blind randomized placebo-controlled trial I could find of ivermectin as a treatment for covid. Using only double-blind placebo-controlled trials means that only the highest quality studies are included in this meta-analysis, which minimizes the risk of biases messing up the results as far as possible. In order to be included, a study also had to provide mortality data, since the goal of the meta-analysis is to see if there is any difference in mortality .... What we see is a 62% reduction in the relative risk of dying among covid patients treated with ivermectin. That would mean that ivermectin prevents roughly three out of five covid deaths. The reduction is statistically significant (p-value 0,004). In other words, the weight of evidence supporting ivermectin continues to pile up. It is now far stronger than the evidence that led to widespred use of remdesivir earlier in the pandemic, and the effect is much larger and more important (remdesivir was only ever shown to marginally decrease length of hospital stay, it was never shown to have any effect on risk of dying).
I understand why pharmaceutical companies don’t like ivermectin. It’s a cheap generic drug. Even Merck, the company that invented ivermectin, is doing it’s best to destroy the drug’s reputation at the moment. This can only be explained by the fact that Merck is currently developing two expensive new covid drugs, and doesn’t want an off-patent drug, which it can no longer make any profit from, competing with them.