Torah's mature seeds are also called cassia. According to Shennong's Materia Medica, Cassia seed is bitter and slightly cold, and belongs to liver, gallbladder and kidney meridians. It has the effects of clearing away liver-fire, improving eyesight, relaxing bowels, reducing blood fat and losing weight, and can be used for treating headache, dizziness, blurred vision, constipation, etc. In recent years, it has been used to treat bedridden hypertension.

Cassia seed contains anthracene glycoside, which is decomposed to produce emodin, emodin methyl ether, rhein, chrysophanol and glucose. Experiments show that cassia seed has the functions of lowering blood pressure, reducing blood lipid and resisting bacteria, and has certain curative effect on hyperlipidemia. In addition to medicinal ingredients, cassia seed also contains many vitamins, rich amino acids, carbohydrates and so on. In recent years, people pay more and more attention to its health care function.

Insist on drinking, which has a good effect on constipation. It should be noted that people with diarrhea and hypotension should use cassia seed preparation with caution. Cassia seed tea is regarded as "eight treasures tea for improving eyesight" by office white-collar workers because of its medicinal value of improving eyesight and clearing liver. However, pregnant women must pay attention to the side effects of its "main diarrhea". The latest research found that long-term drinking can lead to irregular menstruation and abnormal endometrium, thus inducing premature delivery. Cassia seed has a slightly strong intestine-sliding effect, which can be delayed after proper frying, and it is crispy and fragile, and it is easy to fry effective components.