Usually tonic drugs are taken on an empty stomach before meals for better absorption. Patients are also informed to take the medicine on an empty stomach on the decoction method on the medicine bag in the hospital. However, patients with weak stomachs and frequent bowel movements can easily suffer from stomach discomfort or hidden pain, as well as increased bowel movements and even diarrhea if taken on an empty stomach. This is because weak stomach and intestines cannot be tired of the drug, while taking the drug on an empty stomach is a more irritating reaction. Although taking medication on an empty stomach does not cause major problems to appear, the uncomfortable reaction can affect the mood and increase the worry about the disease. Therefore, it is recommended that patients with weak gastrointestinal function or with many bowel movements should avoid taking medication on an empty stomach, and it is better to take the decoction about half an hour after a meal, or eat some food such as eggs, etc. immediately after taking the juice.