In this murder-for-hire scheme, Brazilian researchers used a dose of 1,200 mg/day for up to ten days of CQ.70 According to a 2020 review of CQ and HCQ toxicity, “As little as 2–3 g of chloroquine may be fatal in adult patients, though the most commonly reported lethal dose in adults is 3–4 g.” Predictably, so many subjects died in the Brazilian high dose study (39 percent, 16 of 41 of the subjects who took this dose) that the researchers had to halt the study. The subjects’ mean age was only 55.71 Their medical records revealed EKG changes characteristic of CQ toxicity.