The effects of cassia seeds are laxative, clearing heat and improving eyesight. Cassia seeds are slightly cold in nature, sweet, bitter and salty in taste, and belong to the liver and large intestine meridian. The efficacy of cassia seeds is laxative, clearing heat and improving eyesight, used in the treatment of red eyes and astringent pain, shyness and tears (eyes afraid of light, often tears), headache and dizziness, dark and unclear eyes, constipation. The adverse reactions and contraindications of cassia seeds are not clear, the precautions are spleen and stomach cold and loose stools (feces thin and not shaped) should be taken with caution. Due to the effective therapeutic efficacy of a single drug, this product is often used in combination with other drugs, such as with hookah and raw oyster, to treat symptoms such as liver-yang upturning, dizziness and vertigo. If there is a need for medication, it should be taken in the appropriate amount under the guidance of a traditional Chinese medicine practitioner, and should not be taken in excess to avoid adverse consequences.