Ban Xia - Latin: Pinelliae Rhizoma. Warm natured and TOXIC in its untreated form. Flavor: Acrid. This herb is Warm and will Transform Cold Phlegm. Tx: ACRID FOR OPENING, SLIPPERY FOR DIRECTING REBELLIOUS QI DOWNWARD, and BITTER FOR DRYING; best used for thin phlegm or dampness as well as rebellious ST Qi. This herb will 'descend rebellious qi in the middle jiao like nobody's business' - Shawn Kirby. Strongly descends qi b/c it is slippery.