The main side effect of Yunnan Baiyao capsule is allergic drug rash, which can cause hives in the body. Yunnan Baiyao is a proprietary Chinese medicine that has the ability to detoxify and reduce swelling, invigorate blood circulation and remove blood stasis (promoting blood circulation and eliminating blood stasis in the body) as well as resolving blood stasis and stopping bleeding. It can improve surgical bleeding and soft tissue contusions, as well as treat ulcerative lesions and some skin infections. A small number of patients may develop allergic rashes after taking the drug, with generalized itching, nausea and vomiting, chest tightness, panic and abdominal pain, etc., and hives may also appear on the limbs. Yunnan Baiyao capsule generally pregnant women can not be used, allergic body as well as patients with a history of drug allergy, should be used with caution. When taking Yunnan Baiyao, if you find side effects should be stopped immediately, and then combined with the severity of the symptoms to give anti-allergy treatment, follow the doctor’s instructions to use the drug.