Perilla leaf, ginger and bamboo leaf cannot treat upper heat and lower cold (heat in the upper part and cold in the lower part). Perilla leaves can relieve cold on the surface of the body (by removing cold from the surface of the body), harmonize the stomach, move qi, and calm the fetus; ginger relieves cold on the surface of the body, stops vomiting, and warms the middle Jiaozhi; and bamboo leaves can promote diuresis, promote the production of fluids, and clear heat and remove vexation. Perilla leaves can be used to relieve cold and flu by sweating; to harmonize the stomach and promote circulation of Qi, treating chest congestion and vomiting, coughing and gas reversal; to calm the fetus, and to help with nausea and vomiting, dizziness and anorexia, or even vomiting when eating), and restlessness of the fetus in the early stages of pregnancy. Adverse reactions and contraindications are not clear. Ginger can disperse wind-cold, treating wind-cold cold, lung-cold cough and asthma; warming and stopping vomiting (treating vomiting caused by gastric cold by warming the spleen and stomach), and treating abdominal pain, nausea, vomiting, and abdominal distension. It is contraindicated in cases of yin deficiency and internal heat as well as in cases of excessive heat. Bamboo leaves can clear the heart and remove vexation (to remove vexation and heat inside), and is useful for heat illnesses with vexation and thirst, mouth and tongue sores, and dysuria (unruly urination). It should not be taken if there is a deficiency of yin and fire (deficiency of yin and essence in the body, resulting in hyperactivity of deficiency fire). None of the above three medicines have the efficacy of treating upper heat and lower cold, and they cannot clear upper heat and warm lower heat when combined. If needed, it is recommended to use them under the guidance of a doctor.