A randomized, double-blind, two‐armed (1:1), parallel, single-center, placebo-controlled clinical trial was conducted to test the following hypotheses for mild cases of COVID-19, managed by primary care teams, while undergoing at-home-isolation: H0, the treatment effects of homeopathic Natrum muriaticum LM2 are equal to those of placebo (null hypothesis); H1, the treatment effects of homeopathic Natrum muriaticum LM2 are not equal to those of placebo (alternative hypothesis).
The following guidelines were adopted for this study (namely, COVID-Simile study): the International Council on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use [10], the Brazilian National Research Ethics Committee for conducting research during COVID-19 [11], the Consolidated Standards of Reporting Trials (CONSORT) [12], and the Reporting Data on Homeopathic Treatments (RedHot) supplement to CONSORT [13].
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