Four Reverses Tang with Cinnamon has the effect of tonifying fire and assisting yang, returning yang to save reverse (saving fainting, unconsciousness, etc. by warming and tonifying yang qi), and the specific dosage needs to be under the guidance of a physician. Si Reverse Tang is composed of Radix Psoraleae, Radix et Rhizoma Glycyrrhizae, Radix et Rhizoma Glycyrrhizae. It has the efficacy of returning yang to save the reverse. The main treatment of Shaoyin disease (external disease evil invasion of Shaoyin meridian caused by the disease), heart and kidney Yang decline cold syncope. Symptoms such as coldness of the limbs (unconsciousness, accompanied by cold limbs, even to the elbows and knees), coldness (fear of cold), lying down, and pallor. Cinnamon, with the effect of tonifying fire to help Yang, dispersing cold and relieving pain, promoting blood circulation and menstruation. It is used for kidney yang deficiency, impotence, cold uterus, dizziness, cold pain in the heart and abdomen, menstrual dysmenorrhea. It is not to be taken by people with yin deficiency and fire exuberance, and should be used with caution by people with bleeding tendency. Use with caution in pregnant women. It should not be used with red stone resin. Four Reverse Soup with Cinnamon has the effect of returning yang to save reversal, tonifying fire and helping yang. It is clinically used in the treatment of syncope of the limbs, cold lying down, cold pain in the heart and abdomen, menstrual dysmenorrhea and other diseases. Note that you should not mix and match the medicines on your own, so as not to cause discomfort. If you need to use Si Yi Tang with Cinnamon, it must be used under the guidance of a professional doctor.