Adverse reactions to Chinese medicine mainly include side effects, toxic reactions, allergic reactions, etc. The symptoms often manifest as diarrhea, vomiting, poisoning, allergies, skin rashes, and so on. 1. Side effects: The symptoms of side effects are mainly manifested as diarrhea, vomiting, gastrointestinal discomfort and so on. For example, ephedra has the effect of calming asthma and elevating blood pressure. For patients with asthma, the asthma of ephedra is its therapeutic effect, while elevated blood pressure and so on becomes a side effect. 2. Toxic reaction: Toxic reaction mainly shows shock, foaming at the mouth, convulsions and so on. Due to the slow efficacy of traditional Chinese medicine, some people think that eating too much can be good to take a large number of fast, thus causing poisoning. 3. Allergic reaction: Chinese medicine can also occur allergic reaction. Mild patients mainly manifested as erythema, rash, etc., and severe patients manifested as respiratory difficulties, urticaria, anaphylactic shock, etc.. Chinese medicine should be used under the guidance of a Chinese medicine practitioner, do not self-medication.