Their study, recently published online in JAMA Network Open, included 214 covid-positive people with an average age of 45. The researchers divided the participants into four groups. One group received standard treatment, one got high doses of vitamin C, one got high doses of zinc and the fourth group got both supplements.
“We studied doses above the recommended intake [for zinc, it was 50 mg per day, about five times the amount healthy people should get in their diets each day] because that’s what had been shown to be beneficial in previous studies of colds,” Thomas says. “But even at such high doses, we did not find any difference between our four treatment groups in terms of duration or severity of covid symptoms.”
