Generally, you can take Lysine Vitamin B12 Granules for colds and flu, but this medicine can not treat colds and flu, and if you need to take other drugs, you need to pay attention to the interaction between drugs. Lysine Vitamin B12 Granules is not a cold medicine, this drug is mainly to accelerate children’s growth and development, improve appetite, eliminate anorexia, help brain development and improve intelligence, as well as anti-anemia, enhance physical fitness, resistance to disease, the instruction manual of this drug does not specify that colds can not be used during the drug, therefore, if you need to take this drug, colds during the drug is also available. However, if you also need to take other drugs such as colds, you need to pay attention to whether there are interactions between drugs, lysine Vitamin B12 granules need to avoid and chloramphenicol with the same drug, this drug can offset the hematopoietic response of vitamin B12; on the aminosalicylic acid class, aminoglycoside antibiotics, anticonvulsant drugs (Phenobarbital, etc.), which can reduce vitamin B12 in the intestinal tract to be absorbed. To avoid conflicting medications, patients need to follow strict medical advice when taking Lysine Vitamin B12 Granules.