Immune-boosting effect of natural remedies and supplements on progress of, and recovery from COVID-19 infection
et al., Tropical Journal of Pharmaceutical Research,
Retrospective survey-based analysis of 349 COVID-19 patients, showing a lower risk of severe cases with vitamin D, zinc, turmeric, and honey prophylaxis in unadjusted analysis, without statistical significance. REC/UG/2020/03.
risk of severe case, 42.4% lower, RR 0.58, p = 0.55, treatment 2 of 32 (6.2%), control 24 of 221 (10.9%), NNT 22, unadjusted, severe vs. mild cases.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
This study is excluded in the after exclusion results of meta
unadjusted results with no group details.
Shehab et al., 28 Feb 2022, retrospective, multiple countries, peer-reviewed, survey, 7 authors, study period September 2020 - March 2021.