1. Western medicines: Western medicines for improving children's immunity. Pidotimod granules and oral lyophilized powder of spleen peptide or oral solution of spleen peptide are commonly used in clinic. Pidotimod granule is mainly an immunomodulator, which is suitable for children with low immune function. It can not only be used to treat recurrent infections, but also improve the body's immunity, and can be used to prevent acute infections, shorten the course of disease and reduce the severity of diseases. Spleen peptide oral freeze-dried powder or spleen peptide oral solution is also an immunomodulator, which can not only improve immunity, but also be used to treat cellular immune dysfunction, immune deficiency and autoimmune disorders. In addition, nutritional elements can be supplemented, and drugs containing vitamin D and zinc and iron can also improve children's immunity, such as zinc gluconate oral solution and ferrous lactate oral solution.
2. Traditional Chinese medicines: Sijunzi Pill, Huaiqihuang Granule, Compound Astragalus Oral Liquid, etc. Sijunzi Pill mainly has the function of invigorating qi and strengthening spleen, which can improve the spleen and stomach qi deficiency, enhance the absorption of nutrients in gastrointestinal tract, and improve the immunity of the body. Huaiqihuang Granule has the function of benefiting qi and nourishing yin, which is especially suitable for children with deficiency of both qi and yin, and can improve their immunity. Huangqi oral liquid has the functions of invigorating kidney and spleen, benefiting qi and nourishing blood, and is also suitable for children who often catch a cold to help improve immunity.