小儿止泻口服液是由白术、大青叶、乌梅、甘草等中药制成的复方制剂 ,具有健脾和胃 ,消积止泻之功效。并已由国家卫生部批准进行二期临床试验。大青叶为本品中的主要药物 ,其主要有效成分为靛玉红。关于靛玉红的含量测定方法有紫外分光光度法和薄层扫描法 [1 ] 。我们以本品中 Pediatric Antidiarrheal Oral Liquid is a compound preparation made from traditional Chinese medicine such as Atractylodes macrocephala, Daqingye, Wumei and Licorice. It has the effect of strengthening the spleen and stomach, and accumulating diarrhea. And has been approved by the National Ministry of Health for Phase II clinical trials. Daqingye is the main drug in this product and its main active ingredient is indirubin. About the determination of indirubin content UV spectrophotometry and thin-layer scanning method [1]. We use this product