Efficacy and function of Semen Cassiae: clearing liver, improving eyesight, promoting diuresis, relaxing bowels, slimming and reducing weight, treating bilateral headache, especially when the pain is near the temple, can reduce hypertension. Can be used for treating dizziness, vision loss and dry eyes caused by deficiency of liver and kidney. Cassia seed is mashed and brewed into tea, which is helpful for hypertension with blurred vision, red eyes and dry stool, or it can lower blood pressure when combined with chrysanthemum and Prunella vulgaris.