Communicating and Tranquilizing Pill
(jiao tai wan 交泰丸)

Source: Variorum of Prescriptions《醫方集解》

huang lian golden thread rhizome Rhizoma Coptidis 黃連
rou gui cassia bark Cortex Cinnamomi 肉桂

Indications: irritability, insomnia, palpitations, urinary frequency, hot sensations in the palms, soles and chest, a red tongue with white coating. This formula is commonly used in neurasthenia.