vitamin d3 b12 injection Can I Take D and Together? but a deficiency may occur in certain health conditions (e.g. Vitamin B12 | Elysian Wellness

Every value is mass volume nothing more

Hopefully it's helped other people though and not make things worse

Vitamin B-12 shots might be just what you need to give your body a natural boost

Vitamin B12 deficiency can be occurring while vitamin B12 levels are at levels not typically associated with deficiency due to the presence of deleterious MTHFR mutations. 5 If you have one or more MTHFR, MTRR or MTR gene mutations, you will be less able to methylate B12 or convert your B12 to methylcobalamin

The daily requirement of these vitamins in children is relatively less, so overdosing may cause toxicity in children