Suan zao ren wan is an ancient TCM formula: it is said to have been invented by Zhang Zhongjing, a prominent physician of the Han dynasty. Suan zao ren wan is an effective solution to sleep disorders, especially frequent waking, as its consumption is conducive to deep and regular sleep.

According to traditional chinese medicine, this formula calms the mind and eliminates irritability by acting on two organs: the Liver, which is associated with emotions arising from anger, and the Heart, which governs our consciousness and whose disturbances can cause insomnia and nightmares. Thus, its consumption relaxes the nerves and promotes a deep and restful sleep.