where to do b12 injections How self-inject intramuscular vitamin - Overview Best Vitamin B12 Injection Site:

Semaglutide is one comparison they may consider

Being a vegetarian or vegan : This group consumes less foods that are naturally high in vitamin B12, such as beef and poultry (and sometimes dairy and fish too), which means their intake of vitamin B12 is lower whether their absorption is adequate or not

doi: 10.1371/journal.pone.0192169

Efficacy and Safety of Semaglutide for Weight Loss in Obesity Without Diabetes: A Systematic Review and Meta-Analysis

For motivated patients, some services allow patient-specific direction so they can self-administer B at home (after training)

This allows for stronger absorption, which is why many wellness programs rely on injectable support