is b12 injection subq or im B-12 (Methylcobalamin) Therapy Choosing the Right Needle and

For drawing individual doses after reconstitution, a U-100 insulin syringe (0.5mL or 1mL) is standard

The people who are at the highest risk of B12 insufficiency or deficiency are older adults, those with atrophic gastritis, gastrointestinal disorders, pernicious anemia, those who have had gastrointestinal surgery, vegans, and vegetarians

Well, the answer depends on the reason you want to inject, and on the frequency and duration you plan to inject for

Vitamin B12 can cause dermatitis, acne, and other skin-related conditions when taken in excess, according to a review in the American Journal of Clinical Dermatology