Dr. David Ostrov of the University of Florida is working on alternative over-the-counter medication for COVID19.
He is studying a combination of Benadryl and lactoferrin (better to get it specifically in supplement, not plain milk).
https://www.wcjb.com/2021/11/23/uf-research-reveals-new-compounds-effective-against-covid-19-virus/
have no idea if this is better ..worse..or the same as lactoferrin but I bought it
https://www.amazon.com/gp/product/B0013OQJNY/
also got some black licorice from germany based on an article that said it might help. most US versions of black licorice probably arent good enough.
people in the US might not like some of the foreign versions..like salty black licorice. seems like some of the versions are an acquired taste.