Yunnan Baiyao capsule is taken on an empty stomach or after meals, the instructions for use of the drug does not specify, in general, the patient can choose the time to use the drug according to their own habits. Yunnan Baiyao Capsules belongs to the class of drugs that activate blood stasis (promoting blood circulation and eliminating blood stasis in the body), the composition of which is a national secret formula, which has the effect of eliminating blood stasis and stopping hemorrhage, activating blood circulation and relieving pain (relieving pain by getting rid of blood stasis), and detoxifying and eliminating swelling. This product is commonly used in bruises, blood stasis and swelling pain, blood in the stool, vomiting blood and other various bleeding disorders, soft tissue contusions, sores and swollen poisons, closed fractures, bronchial dilatation and many other diseases, this drug on an empty stomach or after a meal is not clearly defined, the patient can decide on their own. Yunnan Baiyao capsule will let a very small number of patients appear chest tightness panic, nausea and vomiting, abdominal pain, body itching, trunk limbs grow hives and other side effects, once there is an allergic reaction, stop the drug in time, and according to the severity of the condition of anti-allergy treatment. Allergic individuals should be cautious of using this drug, and pregnant women should not use this drug. If you need to use this product, please under the guidance of a professional physician to identify the evidence, do not self-medication, so as not to affect your health.