can you inject b12 into a vein How Quickly Does Shot Work? Benefits & What to Expect B12 Injections for Energy: Benefits

Journal of Medical Case Reports 13 (1): 336

Deficiency after gastric banding is therefore primarily related to: Reduced dietary intake and food tolerance , limiting consumption of B12-rich foods Use of acid-suppressing medicines (PPIs or H2RAs) , which can impair the release of B12 from food proteins and reduce absorption of food-bound B12 Crystalline B12 the form found in supplements and fortified foods does not require acid or pepsin for release

Vitamin B12 is an essential nutrient that supports many critical functions in the body, including red blood cell production, nervous system health, and DNA synthesis

Campagna, R., et al