It is not recommended to drink the water brewed by Cordyceps sinensis overnight. Cordyceps is sweet in taste, flat in nature, belonging to the lung and kidney meridian, with the effect of tonifying the kidney and benefiting the lungs, stopping bleeding and resolving phlegm, suitable for the treatment of kidney yang insufficiency (lack of yang qi in the kidneys), essence and blood deficiency caused by lumbar and knee pain, impotence, spermatorrhea, infertility, etc.; lung and kidney deficiency of prolonged coughing and wheezing; lung consumption and coughing, hemoptysis and hemoptysis, and other illnesses. This product can also be used for the treatment of post-disease deficiency, spontaneous sweating (involuntary sweating during the day, the slightest movement of sweating aggravated) cold, dizziness and fatigue and other conditions. The adverse effects and contraindications of this product are not known. If there is a need for medication, it should be used under the guidance of a doctor to identify the evidence, and should not be used blindly on its own to avoid adverse consequences.