What has been reported in the available human pilot research is that no significant adverse effects were observed - which is a meaningful data point for safety consideration, even if it does not establish efficacy by clinical standards
Liu, T., Liu, Y., Zhao, X., Zhang, L., Wang, W., Bai, D., Liao, Y., Wang, Z., Wang, M., & Zhang, J
Lack of Results Perceived lack of results typically stems from unrealistic expectations or insufficient time rather than product issues
At the same time, it appears to boost macrophage activity, which might support the clean-up phase of inflammation and transition toward repair