how should b12 injections be given to Give at Home to Yourself · PA Relief B12 INJECTIONS - The Nurse

Drug Interactions: Certain medications, like metformin and stomach acid reducers (PPIs), can interfere with B12 absorption from food, which may increase the need for injections

Govindappagari, Shravya, et al

If you have normal B12 levels, an injection is unlikely to make you feel noticeably different

People who follow a vegan or vegetarian diet, are over fifty, take metformin or acid-reducing medication, or have a condition that affects absorption are more likely to be low

The more meaningful risks are compounding quality, sterile technique, and the possibility of masking an undiagnosed condition behind a monthly energy boost