2. Radix Isatidis has obvious effects of clearing away heat and cooling blood, resisting virus and bacteria, and is one of the Chinese patent medicines with large dosage. Radix Isatidis granules, Radix Isatidis oral liquid and Radix Isatidis buccal tablets are commonly used medicines in family medicine boxes, which can be used for catching a cold or preparing for a rainy day. Actually, it's a three-point poison. Chinese medicine reminds Radix Isatidis that it is suitable for cold, and those with deficiency heat should avoid taking it. However, Radix Isatidis has little toxic and side effects, so long as it is not taken in large quantities for a long time, there will be no adverse reactions. Ordinary people drink Banlangen water or Banlangen soup properly, which has the effect of clearing away heat, detoxifying and cooling blood.