vitamin b12 injections how often to take Injection Dose: 7 Guidelines for Adults B12 Shots in Friso, Sherman,
Description
V., Agers, H., Jusko, W

& DiMarchi, R

If you start with twice daily and notice any redness, itching, or flaking, scale back to once daily

The most common side effect is some soreness at the injection site, and you might notice your urine turning bright yellow (thats just the excess vitamins, particularly riboflavin, being excreted)
