Clear cold-chain/shipping protocols: Some injectable medications, such as GLP-1 drugs, must remain cold during shipping
Also, injections are not typically recommended for people without a vitamin B12 deficiency
High-dose oral B12 supplements are available over the counter for a few dollars per month, while injection visits typically involve copays, administration fees, and the time cost of repeated clinic appointments
However, clinical trials in humans have demonstrated mixed results
It is recommended that adults over the age of 50 increase their sources of vitamin B12 through diet, fortified foods, B12 shots, or other supplements that can increase their B12 consumption. (By The National Institutes of Health) GASTROINTESTINAL ISSUES AND B12 SHOTS Persons who have gastrointestinal issues are particularly predisposed to issues with B12 deficiencies