Homeopathy has long been used as a safe and effective method in acute, chronic and pandemic situations. Covid-19 would be no exception. A recent study was published in the National Library of Medicine on evaluating the efficacy in the prevention of the spread of Covid-19 in a quarantined population.
2233 subjects completed the trials. Those taking "Bryonia alba or to the CVN01 nosode signaled (p <0.10) a lower incidence of laboratory-confirmed COVID-19 and a shorter period of illness, with evidence of fewer hospitalizations, than those taking placebo." This was the result of six pills given twice a day for three days.
The conclusion to this pilot study was that it warrants conducting a larger randomized, double-blind, placebo-controlled trial. For now, I would consider this lovely remedy as a possible exposure measure found in most homeopathic kits around the world.