100% of the 32 studies to date report positive effects. Early treatment is more successful, with an estimated reduction of 85% in the effect measured using a random effects meta-analysis, RR 0.15 [0.06-0.37].

Prophylactic use also shows high effectiveness.

•100% of the 14 Randomized Controlled Trials (RCTs) report positive effects, with an estimated reduction of 73%, RR 0.27 [0.15-0.51].
•The probability that an ineffective treatment generated results as positive as the 32 studies to date is estimated to be 1 in 4 billion (p = 0.00000000023).

It strikes me the Covid hysteria has inadvertently unearthed the cure for redesignated colds and flus, but Big Pharma doesn't want this because it would severely dent profits.