It is best not to drink herbal medicines in the morning on an empty stomach because some herbal medicines are cold and will stimulate the stomach and intestines after taking them on an empty stomach, causing adverse reactions in the stomach and intestines. It is usually better to take herbal medicines half an hour after a meal so that there will be no adverse reactions. However, there are some herbal medicines that need to be drunk on an empty stomach, and it also depends on what herbal medicine is being taken. If the disease is in the upper jiao, it usually needs to be taken after meals, and if the disease is in the lower jiao, it needs to be taken before meals. Laxatives and diaphoretics should be drunk on an empty stomach, and tranquilizers need to be taken before going to bed. It is recommended to take medications under the guidance of a professional doctor.