Zhīzǐ Gānjiāng Tāng for Overthinking Insomnia
Sharon explores Zhīzǐ Gānjiāng Tāng, a "teeny-tiny" two-herb formula of zhīzǐ (3 g) and gānjiāng (6 g), mentioned only in clause 80 of the Shānghán Lùn for the case where body heat and slight vexation remain after strong purgation.
She unpacks the pattern: strong purgation creates a new blockage in the middle-soil and shàoyáng pivot, trapping heat that wafts upward as vexation. Unlike the deeper Zhīzǐ Chǐ Tāng pattern (a heart-kidney disconnection that brings nighttime anguish), this is a shàoyáng/soil pattern. Here gānjiāng works not to warm a cold middle but to open it so zhīzǐ can descend the floating heat, drawing on the perspective of Dr. Tán Jiézhōng.
Clinically, Sharon reaches for this formula with insomnia marked by unstoppable, non-distressing thinking: patients who can't fall asleep or wake with a restless mind that won't quiet. Being small and light, it pairs easily with formulas like Xiǎo Cháihú Tāng, Sì Nì Sǎn, or Cháihú Guìzhī Tāng, and works well as a late-afternoon tea.
