Taking Mai Wei Di Huang Wan has the benefit of nourishing the kidneys and the lungs, but it is not recommended to take it on its own for a long time. Mai Wei Di Huang Wan is a kind of Chinese patent medicine, which is composed of ripened di Huang, Cornus officinalis (made), Chinese yam, Poria, Mudanpi, Ze Xie, Maitong, Schisandra chinensis and other ingredients. It has the efficacy of nourishing the kidneys and nourishing the lungs, and is mainly used for the treatment of lung and kidney yin deficiency, hot flashes (a burst of fever), night sweating, dry throat, dizziness, tinnitus, lumbar and knee soreness and weakness (a feeling of soreness and weakness of the lumbar and knee) and other conditions. Adverse effects of Mai Wei Di Huang Wan are not known. It should be noted that, external wind-heat, sore throat, internal heat is full of people should not take; phlegm turbid lung (foul phlegm evil impede lung function), cough, phlegm and white thin, loose stools (feces thin and not shaped) should not be taken; during the drug, avoid indigestible food; cold fever patients should not take; allergic to the product is prohibited, allergic people should be cautious. Maiwei Di Huang Wan is an OTC Class A drug, which must be purchased and used under the guidance of a licensed pharmacist or physician. If there is a need for medication, it should be used under the guidance of a doctor, and should not be used blindly on its own, so as not to cause adverse consequences.