Gui Zhi helps Yang to dissolve Qi, calms the flushing and lowering of Qi, sweating and relieving the muscles (relieving evil Qi on the skin surface), and warming the meridians and channels, which can help to improve wind-cold and cold, paralyzing pain in the joints, and palpitation and edema. Poria has the efficacy of seeping water and inducing dampness, tranquilizing the heart and strengthening the spleen, which can alleviate edema and low urine output, restlessness of the heart and mind, palpitations and insomnia. The side effects of both drugs are unclear. Gui Zhi, pungent and warm, not only good at warming the heart yang, help yang qi, but also sweating to relieve the muscle, leveling the flush and lowering the qi, clinically often and ephedra with the treatment of external wind-cold, the surface of the solid without sweating. If there is a deficiency in the surface with cold, it can be used with white peony. Chest Yang is not vibrant, chest paralysis and heart pain, can also be used with Citrus aurantium, Allium sativum. For joint paralysis and pain, it can be combined with Radix Polygoni Multiflori. Gui Zhi should not be used in cases of yin deficiency and fire exuberance (deficiency of yin and essence in the body, resulting in hyperactivity of deficiency fire). Poria, which is calm in nature, is a good medicine for seeping water and inducing dampness, and can strengthen the spleen and tranquilize the heart, and is effective in treating all cases of water-dampness internal stagnation (water-dampness stays in the body) resulting in urinary incontinence and oedema of the limbs, which can be used in combination with cinnamon sticks, atractylodes, poria and other medicines. For the treatment of diarrhea caused by spleen deficiency and dampness, Poria can be used in combination with Coix Seed, Chinese yam and Atractylodes Macrocephala. This drug should be used with caution for people with deficiency and cold essence. The side effects of both Gui Zhi and Poria are not known. If you wish to use these two medicines, you must be guided by a medical professional.