b12 injection intramuscular or intravenous Best Vitamin Sites: Where to Inject B12 · PA Relief b12 injection subcutaneous vs.intramuscular Practice

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

The B12 is commonly used and prescribed medications are considered safe

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

Since it doesnt list B (often called cyanocobalamin on labels), that confirms youd need a separate source for B

But, they might be given more often, like weekly, based on how the patient responds