Meta analysis using the most serious outcome reported shows 38% [-46‑73%] lower risk, without reaching statistical significance. Currently all studies are RCTs.
One study shows statistically significant improvement.
Studies to date are from only 2 different groups.
No treatment or intervention is 100% effective. All practical, effective, and safe means should be used based on risk/benefit analysis. Multiple treatments are typically used in combination, and other treatments may be more effective.
All data to reproduce this paper and sources are in the appendix.
Covid Analysis et al., May 2024, preprint, 1 author.