胆南星
Arisaema tuber with bile (Dannanxing)

When arisaema tuber is powdered and mixed with ox bile, it is called Arisaema tuber with bile (Dannanxing). The combination is bitter and cool. It clears heat and resolves phlegm, dispels wind and stops convulsions. It is used to treat convulsions, windstroke and epilepsy.
The recommended dosage is 2-5 g.