Bird's nest is best eaten on an empty stomach, one morning and one night, 70 grams of instant rock sugar bird's nest can be divided into two times, one morning and one night, eaten within a day after opening the bottle, if the physical state is poor, take it consecutively, if it is only from the point of view of nourishment and health care, it can be eaten once every other day or once every two days. One principle: eat less and more times. Take the tonic on an empty stomach to fully allow the stomach and intestines to absorb it. Bad kidney and high blood pressure do not affect the consumption of bird's nest.