benefits of b12 injections Shots: Amazing You Should Know About The Power of B12 Methylcobalamin

For really bad cases, you might need more, and shots are given once a week, or as the doctor says

B12 supports metabolism and helps convert fat and carbohydrates into energy, making it easier to lose weight when combined with healthy eating and exercise

If blood tests show clearly low levels (thresholds vary by lab, but often below roughly 200 pg/mL) or there are signs of anemia, a provider may recommend weekly injections for the first several weeks as a correction or "rescue" phase

In a study of 10 healthy male volunteers, omeprazole, in doses of 20 mg-40 mg per day, caused a significant decrease in the oral absorption of methylcobalamin, vitamin B12