0
0.5
1
1.5
2+
Case
17%
Improvement
Relative Risk
Case (b)
25%
HCQ Boulware et al. Prophylaxis RCT
Is post-exposure prophylaxis with HCQ beneficial for COVID-19?
RCT 821 patients in the USA (March - May 2020)
Trial compares with folic acid, results vs. placebo may differ
Fewer cases with HCQ (not stat. sig., p=0.35)
c19hcq.org
Boulware et al., NEJM, June 3 2020, Jun 2020
Favors HCQ
Favors folic acid