Mulberry (bark) has a sweet taste and is considered to be cold in temperature according to traditional Chinese medicine. It can help with phlegm, coughing, and wheezing by draining heat from the lungs and calming the wheezing. It can also promote urination and reduce edema. It may be used to help with hypertension. However, it should not be used if the lungs are already cold. The recommended dosage is 6-15g.