can i take vitamin d and b12 injection together Together? Vitamin B12 and Vitamin D

These findings are preclinical and must not be presented as evidence of human fat loss, metabolic improvement, anti-aging effects, or clinical NAD + enhancement

Fortunately, there is increasing evidence that oral B12 supplements are just as good as injections for raising blood levels in most people ( Vegetarians and vegans are usually advised to take at least 10 mcg per day, or at least 2,000 mcg once per week ( However, some doctors still prefer the use of injections

PMID 24091055

Food & Drug Administration

In some cases, alternative testing methods may be needed to distinguish true elevation from laboratory interference