American ginseng and cassia seeds do not have contraindications, can be brewed together to drink water, the two brewed water to drink with clearing heat and brightening the eyes (to get rid of the body’s heat evil, to promote the recovery of eyesight), laxative and other effects. American ginseng, sweet, slightly bitter flavor, cool nature. It belongs to heart, lung and kidney meridians. It has the effect of tonifying qi and nourishing yin, clearing heat and generating fluids. It is used for deficiency of qi and yin, deficiency of heat and tiredness, coughing, asthma, phlegm and blood, internal heat and thirst (internal heat accompanied by symptoms such as eating, drinking and urinating), dry mouth and throat. It should not be used in conjunction with Veratrum. Cassia seed, sweet, bitter, salty, slightly cold in nature. It belongs to liver and large intestine meridian. It has the effect of clearing heat and brightening the eyes, moisturizing the intestines and laxatives. Used for eye redness and astringent pain, shyness and tears (eyes afraid of light, often tears), headache and dizziness, dark eyes, constipation. Diarrhea and low blood pressure should be used with caution. The two together in water has the effect of clearing heat and brightening the eyes, nourishing the yin and moistening the intestines. However, the effective dose of brewing water is limited, it is difficult to achieve the above effects, it is recommended to consult a doctor, under the guidance of the doctor for scientific treatment.