It's over the counter and probably can't hurt.
Quercetin
Researchers in Québec are hopeful that a drug derived from plants could be the key to curing infections caused by the novel coronavirus.The broad spectrum anti-viral medicine known as quercetin has already proven successful at treating Ebola and Zika viruses, says Dr. Michel Chrétien, a researcher at the Clinical Research Institute of Montreal.
https://www.cbc.ca/radio/thecurrent/...hina-1.5480134