1, Yellowstone Peel, has the functions of clearing away lung-heat, resolving phlegm, relieving cough and asthma. Because of its bitter taste and cold, people with cold constitution such as deficiency of spleen and stomach or deficiency of kidney yang should not take it, so as to avoid its cold damage to human yang, thus aggravating digestive system symptoms such as abdominal distension, belching, acid reflux and diarrhea.

2. If patients with kidney-yang deficiency take it, it may aggravate the symptoms of chills and frequent urination at night. In addition, people who have a cold, cough, phlegm and dampness, and rheumatism should not take it.