Depending on the therapeutic purpose, Chinese herbal medicines are most effective when taken on an empty stomach, before a meal, after a meal, and at bedtime. Depending on the purpose of treatment and the type of medicine, the optimal time to take Chinese medicines varies somewhat. The following are some of the best times to take them: 1. Fasting: generally the time after waking up in the morning, suitable for taking drugs with tonic effect, diarrhea effect, and deworming drugs. 2. Before meals: generally refers to 30 minutes to one hour before meals, suitable for taking the treatment of intestinal diseases, regulating the spleen and stomach medicines. 3. After meal: generally refers to about 30 minutes after the meal, it is appropriate to take the treatment of cardiopulmonary diseases, elimination of food to strengthen the stomach (to promote food digestion, and strengthen the function of the stomach and internal organs) or clearing the heat and detoxification (to remove the body of the heat and toxicity of the evil spirit) medicine. 4. Before bedtime: generally refers to about 30 minutes before going to bed, it is suitable to take tranquilizer, laxative and laxative drugs. If patients need to take Chinese medicine, you can go to the hospital, under the guidance of the doctor’s advice, choose the best time to take.