what needles for b12 injection best size needle vitamin injections A Guide to the gauge needle to use – Choosing the Right Needle and

"Low plasma vitamin B12 is associated with lower BMD: the Framingham Osteoporosis Study"

Your Methylcobalamin Questions, Answered Still have questions

PMCID: PMC8332470

intramuscular administration Subcutaneous (into fatty tissue of abdomen, typically 1-2 inches lateral to navel, using a 25-27 gauge, 5/8-inch needle): 28% report injection-site soreness Easier for self-administration Slower absorption (peak serum B12 at 12-18 hours vs

Vitamin B12 primarily comes from animal-based products, which makes those who follow vegetarian and vegan diets more likely to develop vitamin deficiency

The empty B12 vial can also go into the sharps bin