Observation on therapeutic effect of Yindan Xinnaotong soft capsule

Yindan Xinnaotong soft capsule is prohibited for those who are allergic to this product, which may cause liver damage. I just don't know how to determine whether a patient is allergic to drugs. If the patient doesn't know that he is allergic to drugs, what should the doctor do if he suffers from drug damage after taking it? There is a saying: it is a three-point poison. Therefore, taking Yindan Xinnaotong soft capsule has side effects on individuals.