Zinc is the key.
Look into Quercetin / zinc pills.
Very cheap, very safe.
Around for a long time in use by many for general immune health, seasonal bugs, etc.
Quercetin is a zinc ionophore as are HCQ and the other things being discussed but which are hard to impossible to get prescribed in some states.
Except that Quercetin is:
Available OTC today from Walmart, etc.
Check with your doc if you feel the need, but... just go to somewhere like Walmart dot com and buy it. Don’t wait for govt to do the right thing with HCQ.
Or get Quercetin from a reputable vitamin vendor like www.lef.org. They have a version that has very high bioavailability, and the daily cost is very small.