Herbs that Tonify Blood

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Which of the following herbs "softens and comforts" the Liver to treat painful spasms, cramping, and contraction?
Bai Shao softens the Liver to treat painful spasms and muscle cramps, both abdominal cramping and cramping in the extremities, as in Shao Yao Gan Cao Tang or Xiao Jian Zhong Tang.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. p. 755 [Q108]