This discussion should not be taking place here. We posters in the CR are not professionals, not in medicine, pharmacology, or public health. The issues at hand are complex, and our lay opinions are worth nothing, even though we are entitled to have them.
Scientific research is a complicated process. One seeks to find a causal relationship, in this case, with the medication being effective. There are so many variables that make this far from simple. Dosage is only one of those. There are many physiological variables, the conditions of the patient, etc. that are relevant. The length of time, the combinations with other drugs, etc. These require controlled conditions, a sample that is sizable enough to be sure the results are not by chance, and the comparison to other interventions (or lack thereof). Two doctors using any particular medication in different places and under different conditions cannot compare or contrast their results.
The amount of time to resolution or cure is also a factor, as are side effects. We are all a bunch of fools shooting off our mouths about a subject that is beyond us. As much as I tend to support Trump, I believe it was not his place to speak to the public about this medication. He might say there are ideas being floated and examined by scientists and doctors, but he is not the one to push a medical agenda.