Covid-19 and reduces the risk of complications from the disease, doctors in Canada said.The results of the study are a "major scientific discovery" and make colchicine -- a medicine used to treat gout -- "the world's first oral drug that could be used to treat non-hospitalized patients with Covid-19," the Montreal Heart Institute said in a statement late Friday.The study results show that colchicine reduced by 21 percent the risk of death or hospitalizations in patients with Covid-19 compared to placebo, the institute said.The study was carried out in Canada, the US, Europe and South America among a population of 4,488 patients.In 4,159 of these patients, in whom the diagnosis of Covid-19 was proven by a naso-pharyngeal PCR test, use of.