No personal disrespect to the poster with the screen name "Nell Goddin", but- naturalistic photograph notwithstanding- the uncheckable claims of a basically anonymous poster on the Internet about their own medical experience don't even count as series-of-one anecdote, in terms of credibility.

This is a simple matter of skepticism. When it comes to personal anecdotes on the Internet, there are rules for assessing veracity (which is never going to be more than conditional), and medical claims require a lot more evidence than most topics. They also tend to be resistant to skeptical inquiry.

This comment is not to be read as a dismissive hand-wave of the possible therapeutic value of invermectin. I'm given to understand that reasonably rigorous studies of various sorts are being run on its possible uses against covid, and I'm waiting for more evidence to arrive before granting full credence to one position or another.