Each of the substances showed in Figures 4-7 is accompanied by a colored marker specifying its primary therapeutic indication. These indications are mostly from the DrugBank (see Tables and for some additional references) and do not mean that a given substance does not have any other uses -for instance, primary indication of Arzoxifene is for breast and endometrial cancer treatments, but it is also in trials for post-menopausal osteoporosis treatment . We recognize that some indications may be less relevant to COVID-19 than others but, at the same time, we note that parents coming from such seemingly unlikely classes have been considered in literature-reported COVID-19