Fig. 3: Adverse Event Profile of Hydroxychloroquine Across Escalating Dose Levels. Unique adverse events for frequencies and grades for each of the 3 doses of HCQ (400, 600, and 800 mg/day), with grades 1 and 2 events on the left and grade 3 on the right.
No grade 4 adverse events for any dose of HCQ were observed in any of the patients.
