While supplements are usually given as tablets, your doctor may recommend B12 injections, depending on your situation
Follow the steps carefully for correct preparation
According to recommendations from nutrition institutes and the World Health Organization (WHO), the daily Recommended Dietary Allowance (RDA) is as follows: Infants 06 months: 0.4 mcg Infants 712 months: 0.5 mcg Children 13 years: 0.9 mcg Children 48 years: 1.2 mcg Children 913 years: 1.8 mcg Teenagers 14+ years and adults: 2.4 mcg Pregnant women: 2.6 mcg Breastfeeding women: 2.8 mcg Receiving adequate daily Vitamin B12 helps reduce the risk of anemia, fatigue, and neurological problems, while supporting optimal metabolic and overall bodily function

Extra caution is appropriate in patients with active cancer, recent cancer, unexplained masses, unexplained weight loss, pregnancy, breastfeeding, known allergy to peptide products, active infection, immune compromise, significant liver or kidney disease, active inflammatory or autoimmune disease flares, unusual clotting history, uncontrolled cardiovascular disease, use of chemotherapy or immune-modifying biologic therapy, and competitive athletes subject to anti-doping rules