Hallo Thorsten,
würde das Deinen strengen Kriterien genügen? :
https://www.nutraingredients-asia.com/Article/2020/03/09/COVID-19-China-retailers-and-suppliers-report-surge-in-demand-for-Vitamin-C-supplements?utm_source=copyright&utm_medium=OnSite&utm_campaign=copyright
http://koreajoongangdaily.joins.com/news/article/article.aspx?aid=3073816
entnommen aus:
https://www.swiss-biohealth.com/coronavirus-update/
LG, Albrecht