for people who have their DNA..here is one study trying to figure out how the variations made a difference on HQC treatment for COVID
https://www.degruyter.com/document/doi/10.1515/dmpt-2020-0164/html?lang=en
So for those that don’t really understand how genetics make a huge difference on this...this paragraph is an example. btw, I saw a study that indicated that it seems that people who have retina issues with this drug had a higher level of one of the metabolites...which could be related to genetic breakdown of the drug
“So, in the present study, CYP2D6*4 (AA) carriers were poor metabolizers and HCQ was metabolized poorly leading to decreased formation of one of the active metabolites (desethyl HCQ), this could decrease the efficiency of HCQ in preventing Covid-19 viruses from entering cells making the risk of Covid-19 infection and formation of IgM antibodies more likely.”