Rhizome of Giant Typhonium Classic Formulas … Natural Herb Library

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Dispels wind-phlegm and stops spasms ... Bai Fu Zi is used for facial paralysis, mouth-eye deviation, headache, and convulsive or obstructive patterns where wind and phlegm block the channels.
Relieves pain and opens the channels ... it appears in stubborn headache and facial or jaw pain when phlegm-turbidity and obstruction dominate.
Resolves toxin and dissipates nodules ... external and internal traditions include scrofula, toxic swelling, and snakebite-style applications.

Qian Zheng San ... hallmark formula pairing Bai Fu Zi with Jiang Can and Quan Xie for facial deviation from wind-phlegm.
Headache and facial-obstruction combinations ... Bai Fu Zi is used when phlegm and wind clog the channels of the head and face.
Topical toxic-swelling preparations ... older use extends to nodules and venomous bites in tightly controlled applications.

Traditional materia medica describes Bai Fu Zi as acrid, sweet, warm, and toxic, entering the Liver and Stomach to dispel wind-phlegm and relieve spasm or pain.
The name overlap with aconite-derived `Fu Zi` is important ... these are different herbs with different toxicology and therapeutic logic.