<p>Da Zao is indicated for hypertonicity with stiffness; if the pattern does not include these indications, Da Zao is ineffective. Shi Zao Tang is indicated for hypertonicity that leads to stiffness and pain. Since Da Zao is the primary herb in Shi Zao Tang, its indications are clear.</p>

<p>The Gan Mai Da Zao Tang pattern includes &ldquo;abnormal sorrow and joy&rdquo; since the patient is distressed over their illness. Da Zao is used to treat hypertonicity that causes stiffness, whereas Gan Cao and Xiao Mai are used to treat acute pain.</p>

<p>Da Zao, Gan Cao and Bai Shao are indicated for similar patterns. Doctors need to study their differences.</p>
