2, overdrinking: although it has a lot of effects, but pay attention to appropriate drinking, not too much. Because of its strong flavor, if you drink too much, the efficacy will be reduced, but also produce side effects. In addition, note that flowers contain bacteria, insect eggs, etc., can not drink directly, easy to cause abdominal pain, diarrhea.
3, contraindications: it is warm, warming yang qi, so the internal fire is not recommended to drink, easy to appear on fire phenomenon. Fever, sick people can not drink, will aggravate the condition. In addition, pregnant women and people with diabetes are best not to drink.