Full COA with every batch: GC-MS fingerprint, ligustilide/ferulic acid markers, density/refractive index, acid/ester value, heavy metals and microbiology.
Steam-distilled or CO2-extracted from Dao-di Szechuan lovage (Ligusticum chuanxiong Hort.) dried rhizomes of Dujiangyan, Pengzhou and Chongzhou, Sichuan, China.