1, pregnant women: If the pregnant woman's constitution is qi deficiency, dryness or cough due to yin deficiency, drinking dried tangerine peel will aggravate yin deficiency, and then obvious discomfort such as palpitation, shortness of breath, dizziness and poor mental state will occur;

2, people with hyperacidity: this group of people is often accompanied by discomfort such as loss of appetite, nausea, acid reflux, heartburn. It is mainly caused by stomach fire and qi deficiency. At this time, drinking tangerine peel soaked in water will increase gastric acid secretion;

3. Some people who take western medicine: During taking western medicine such as calcium carbonate, magnesium sulfate, ferrous sulfate, aluminum hydroxide and bismuth carbonate, it is not recommended to soak in water with dried tangerine peel. Because dried tangerine peel contains flavonoids, it will affect the absorption of western medicine. In addition, soaking tangerine peel in water should not be used at the same time with α -blockers such as tolasurin and phenoxybenzamine, so as not to affect the antihypertensive effect.