The side effects and contraindications of yellow fungus are currently unknown. The yellow fungus is the fruiting body of the fungus Golden Ear of the genus Ginkgo, family Ginkgoaceae. It is sweet in flavor and flat in nature; it belongs to the lung meridian. It has the effect of nourishing yin and moistening the lungs (replenishing the body’s yin fluid to moisturize the lungs), and generating fluids and quenching thirst (promoting the production of fluids to relieve thirst). Yellow fungus can be used to treat coughing due to deficiency labor, blood in sputum, thirst due to lack of fluid, hot flashes (a burst of heat, feeling that the heat is coming from inside the bones to the outside), and night sweating (sweating abnormally after going to sleep, but stopping after waking up). Although the side effects and contraindications of Huangmuer are not clear, patients should use the medicine under the guidance of a doctor.