Norovirus goes around in USA at present.

It is RNA virus - as are flu, covid, RSV & HIV.

Nitazoxanide - let's call it NTZ? - is drug against parasites - https://en.wikipedia.org/wiki/Nitazoxanide

In many countries, NTZ is cheap & available without prescription, considered very safe.

I am shocked to learn, today rn, that NTZ is also.....antiviral.

Wikipedia claims NTZ is good against flu virus:

Nitazoxanide, sold under the brand name Alinia among others, is a broad-spectrum antiparasitic and broad-spectrum antiviral medication that is used in medicine for the treatment of various helminthic, protozoal, and viral infections.[4][5][6] It is indicated for the treatment of infection by Cryptosporidium parvum and Giardia lamblia in immunocompetent individuals and has been repurposed for the treatment of influenza.

Studies come up in Google search, that say NTZ may be good against flu, norovirus, Ebola virus, dengue:

https://pmc.ncbi.nlm.nih.gov/articles/PMC7113776/
https://ashpublications.org/blood/article/122/21/4581/11274/Nitazoxanide-Is-Effective-Therapy-For-Norovirus
https://pmc.ncbi.nlm.nih.gov/articles/PMC3368802/
https://pubmed.ncbi.nlm.nih.gov/31402258/

"The science" could change, or go back & forth. But.....

Why isn't this more commonly discussed?

At least, better-studied?

Why does more than one anti-parasite drug, for unknown ie. -un-studied- reasons, coincidentally seem to have effects against totally separate group of diseases - RNA viruses? (ivermectin, hydroxychloroquine, maybe *bendazoles, & now NTZ)

If you are a "follow the money" type of "conspiracy theorist":

It could seem as if Big Pharma has no interest in cheap, off-patent, highly-available solutions to common viruses. Only patented stuff, like vaxx shots & hyper-costly drugs.