Usually there is no season to eat Cordyceps, so there is no best season to eat Cordyceps, patients are advised to follow the doctor’s instructions for medication. Cordyceps belongs to yang tonic, warm, sweet, into the lung, kidney meridian, with tonifying the kidney and benefiting the essence (replenish the kidney essence in the body), can be used for the treatment of renal yang insufficiency (lack of yang of the kidneys), essence and blood deficiency caused by the lumbar and knee soreness and softness (lumbar and knee soreness and weakness of the feeling), impotence and premature ejaculation, and so on. It also has the effect of tonifying the lungs, relieving cough and resolving phlegm, and can be used to treat cough, asthma, night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), and spontaneous sweating (involuntary sweating during the daytime, aggravated by sweating with slight movement). Cordyceps sinensis can be taken in decoction soup as well as in pills, and can also be used in soups for drinking. Adverse effects are still unclear, and it is not recommended for those who have not yet resolved their epidemiologic evils (evils on the surface of the muscle). It is recommended that patients take it under the guidance of traditional Chinese medicine practitioners.