Young people can choose some commonly used Chinese herbal medicines for health preservation, such as Lycium barbarum, Scrophularia, Polygonatum odoratum, Ophiopogon japonicus, etc., which can promote salivary gland secretion, moisten the throat and have the effect of immune regulation. Common tonics: Ginseng, Radix Astragali, Atractylodis Rhizoma, Poria. But it is difficult to decide whether the dose is suitable for your own physique. Whether it is food supplement or medicine supplement, it is best to consult professional Chinese medicine for daily health care.