They are the basic herbal formulas that students of Traditional Chinese medicine learn.
For example, "Liu Wei Di Huang Wan" (六味地黄丸; liùwèi dìhuáng wán; liu-wei ti-huang wan) was developed by Qian Yi (钱乙 Qián Yǐ) (c. 1032–1113 CE).
It was published in the "Xiao'er Yao Zheng Zhi Jue" (also known as "Key to Therapeutics of Children's Diseases" 小儿药证直诀; Xiǎoér yào zhèng zhí jué; Hsiao-erh yao cheng chih chüeh) in 1119 by Qian Yi's student.
The top 5 manufacturers in Taiwan There are hundreds of Chinese classic herbal formulas.
The two leading brands to export Chinese classic herbal formulas in the form of Chinese patent medicine from China are Mín Shān (岷山) and Plum Flower (梅花).