Children should not drink Lysine Vitamin B12 Granules for a long time. Lysine Vitamin B12 Granules is mainly a compound preparation composed of lysine, vitamins and inositol. This product has the effect of promoting children’s growth and brain development, improving intelligence, enhancing appetite, eliminating xenophagy, strengthening the body, anti-anemia and so on. Long-term use of this drug may lead to excessive vitamin B12 in the body, causing eczema, urticaria, facial edema, asthma, folic acid deficiency and other adverse reactions. And there is an increased risk of severe metabolic toxicity from lysine overdose. Therefore, it can be discontinued after 1 to 2 months when the symptoms are relieved. When using this product, you need to choose the appropriate dosage according to the height, weight and age of the child, please consult your doctor before using the drug, do not use without authorization.