Anyone interested in trying it should try to source it from reputable dealers.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6257895/
I'm personally pretty sceptical about Chinese herbal medicines, but nevertheless I publish this here to allow you to make up your own mind and experiment if you so desire.There are a total 16 herbs used in basic prescriptions in the included studies and eight herbs were utilized more than once, including Angelicae Sinensis Radix (Dang gui; six times), Fritillariae Thunbergii Bulbus (Zhe bei mu; six times), Sophorae Flavescentis Radix (Ku shen; six times), Talcum (Hua shi; five times), Vaccariae Semen (Wang bu liu xing; twice), Phellodendri Chinensis Cortex (Huang bai; twice), Tara xaci Herba (Pu gong ying; twice), and Cyathulae Radix (Chuan niu xi; twice). These herbs are from heat-clearing, blood-invigorating and blood stasis-removing, and tonifying categories. Due to the significant variety of herbs used in the included studies, it is infeasible to assess the effects of the basic formula (i. e., DBKW) across different studies. It is recommended that future research considers using the formula with original ingredients to ensure the possibility of data synthesis
