Hau Pu can be brewed and drunk, but the efficacy may be reduced after brewing, so it is not recommended to brew and drink. Houpu is pungent, bitter and warm in nature, it has the effect of drying dampness and eliminating phlegm, lowering qi and removing fullness (enabling qi to go downward to alleviate the discomfort of fullness), and can be used for treating dampness stagnation and injuries in the middle, epigastric plague and vomiting and diarrhea, food stagnation (food that is indigestible and accumulates in the stomach), stagnation of qi, abdominal distension and constipation, and phlegm (the pathological product of the metabolism disorder of water and liquid) and coughing and asthma, and so on. Houpu can be infused with water, but the proper use of Houpu is decoction, and infusing it may prevent the full release of its active ingredients, thus reducing its efficacy. The adverse effects of Huperzia are not clear, this product is hard, warm and dry, easy to consume qi and injure the fluid, so qi deficiency and fluid deficiency and pregnant women should be used with caution. If you need to use the above medicines, it is recommended to use them again after identification by a traditional Chinese medicine practitioner, and do not use them blindly, so as to avoid adverse consequences.