Sal ammoniac, alum, cinnabar, and salt (calcined by placing alum and salt on a red-hot rusted iron knife) in equal parts.

bubble_chart Preparation and Dosage

Grind the above ingredients into a fine powder. Apply to the affected area.

bubble_chart Indications

A tooth boil and sore, growing on both sides of the tooth gap, swells up like a grain of foxtail millet, causing pain that extends to the cheek and neck.