Jing Si Herbal Tea for Long-Coronavirus Disease(COVID) Gut-brain Interaction

The preliminary data demonstrated that the Jing Si Herbal Tea Liquid Packet may improve gastrointestinal symptoms and anxiety in patients with Coronavirus disease 2019(COVID-19). Therefore,this study aims to investigate the impact of the Jing Si Herbal Tea Liquid Packet on psychophysical burden and metabolites of microbiota in patients with FD through a double-blind randomized manner.

Compared with the improvement effect of Jing Si Herbal Tea Liquid Packet, to avoid participants thinking that the improvement is due to psychological effects.