Test results of Vitamin C Yinqiao Tablets show that this product contains two unlabeled and banned Western medicine ingredients "phenacetin" and "aminopyrine". Both drugs can relieve pain, but can cause serious side effects. The side effects and adverse reactions of Vitamin C Yinqiao Tablets include drowsiness, drowsiness, thirst, and weakness; occasionally rash, urticaria, drug fever, and neutropenia; long-term use of large amounts of medication can lead to abnormal liver and kidney function. Serious adverse reactions include: dyspnea; systemic rash with itching, severe urticaria, severe erythema multiforme drug eruption, epidermolysis bullosa; abnormal liver function; anaphylactic shock, anaphylactoid reaction, and syncope; Interstitial nephritis; leukopenia, hemolytic anemia, etc.