B12 injections should follow a medical diagnosis that includes a blood test to confirm deficiency
It helps your body make red blood cells, maintain nerve health, and produce DNA
But the companies making and promoting these peptides are not especially deserving of blind trust
Oral Supplements : Oral supplements are widely available, and research suggests that, at high doses, they can be just as effective as injections for correcting deficiency[21], making them a viable alternative for many individuals
For example, vitamin B12 is necessary for the production of DNA and red blood cells
Fortified foods like breakfast cereals and nutritional yeasts offer a convenient option, especially for vegetarians and vegans