Why hasn't there been a run on tonic water?

Ohio has restricted prescriptions for the anti-malarial drugs chloroquine and hydroxychloroquine — used now here primarily to treat the symptoms of lupus — after excessive prescribing and hoarding amid reports the anti-malarial drugs may be effective against the COVID-19 coronavirus.

There have not been scientifically accepted studies to prove this is the case, but with the current fears over COVID-19, such reports are more than enough to start panic acquiring of these drugs. Chloroquine and hydroxychloroquine are analogues of quinine, the "tonic" in tonic water. In the current environment, one would expect to see a run on tonic water.

That's not the case. I was at the grocery store this afternoon, and there was plenty of tonic water on the shelf.

Consumers aren't as savvy as they think they are. I was also in a drug store this afternoon, and not a single Cold-EEZE product could be found, undoubtedly due to similar reports that Cold-EEZE might inhibit COVID-19. Yet there were plenty of Zicam products available, even though both brands have the same active ingredient.