The hydroxychoroquine, evidently, grabs the bodys zinc to fight the virus ~ thus, the need to add the z-pack
Note that zPack is another name for azithromycin. Its like Advil is the same as ibuprofen. We ought to call the whole set The Trump Cure, or the TrumpPack.
IIUC, the Z-pack is for bacterial infection risk. Zinc is a separate, third supplement.