We have found 36 approved drugs (Table ), which potentially could block the channel and inhibit the virus life cycle. Some of those compounds could be ruled out from the consideration straight away due to safety concerns (e.g. the curare alkaloids, opiates, penfluridol). Some others (the three approved antivirals, glecaprevir, saquinavir, simeprevir) were mentioned more than once in the current theoretical and laboratory research related to Covid-19.