Sea Buckthorn Tea Leaf

COVID-19: Scientists seek GoI funding to develop seabuckthorn immunity booster
Presently, over 55 countries are involved in scientific research and commercial utilization of seabuckthorn.
https://www.thestatesman.com/cities/shimla/covid-19-scientists-seek-goi-funding-develop-seabuckthorn-immunity-booster-1502896741.html

sea buckthorn tea bags to boost immunity and herbal sanitation wipes are among the items in a COVID-19
https://www.theweek.in/news/india/2020/09/11/immunity-boosting-tea-touch-free-hooks-parliament-getting-covid-ready-for-monsoon-session.html

A Super Tea Too
If the berries weren’t super enough, seabuckthorn leaves also contain significant medicinal properties. A recent study by Agri Food Research in Health in Manitoba found that seabuckthorn leaves were loaded with polyphenols in levels far in excess of that found in green tea leaves:
https://vergepermaculture.ca/seabuckthorn-crop-spotlight/

https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2022.890486/full

the science on the plant Antibacterial and antiviral effects and a lot more
https://www.researchgate.net/publication/283105143_Sea_buckthorn_Hippophae_rhamnoides_L_as_a_potential_source_of_nutraceutics_and_its_therapeutic_possibilities_-_A_review