how long does vitamin b12 injection stay in your system Quickly Shot Work? Duration of Benefits How long do the benefits

2 In comparison with other B vitamins, B 12 is not synthesized by animals, fungi, or plants

A vegetarian diet which contains no animal products (including milk products or eggs) does not supply any vitamin B12

To absorb the most B12, divide your dose over the course of the day

Older adults, in particular, may require higher amounts due to absorption challenges or medications that interfere with vitamin absorption

The medication can be kept at room temperature for short periods when preparing an injection, but prolonged exposure to room temperature should be avoided unless specified by the pharmacy

Adequate studies in humans have not been conducted