Lysine vitamin B12 granules can promote children’s growth and development, enhance appetite, eliminate xenophagia, help brain development and improve intelligence. Lysine vitamin B12 granules have the efficacy of anti-anemia, strengthening the body and resistance. Lysine B12 granules are compounded with lysine hydrochloride, vitamin B12 and inositol as the main ingredients, and the three substances play a synergistic role in the body. Lysine is one of the essential amino acids, which can promote human development, enhance children’s immune function, improve appetite, and have the effect of improving the function of central nervous tissue. Vitamin B12 is an important coenzyme for the synthesis of DNA in the body and is involved in the production of bone marrow red blood cells to prevent pernicious anemia in children, as well as to improve and strengthen their resistance. Inositol promotes the metabolism of fat in the liver and lowers cholesterol; prevents eczema. Dosage for children: for children aged 1 to 5 years, 5 grams (0.5 sachet) once, 1 to 2 times a day; for children aged 6 to 12 years, 10 grams (1 sachet) once; for children aged 13 years and above, 10 to 20 grams (1 to 2 sachets) once, 2 to 3 times a day; take with warm boiled water. It should be noted that the combination with chloramphenicol should be avoided when taking lysine vitamin B12 granules because chloramphenicol eliminates the hematopoietic effect of vitamin B12. High intake of vitamin C should be avoided when taking lysine vitamin B12 granules, as vitamin C can disrupt the absorption of vitamin B12. In addition, lysine vitamin B12 granules are prescription drugs and need to be taken when necessary by a doctor’s diagnosis. It is a medicine that should not be used on its own without indications, and patients should not buy it on their own.