correct needle size for b12 injection Purchase Needles (PrecisionGlide) 1 inch or 1/2inch at BiosenseClinic B12 Injection Kit: Syringes &
Description
B12 shot side effects are rare and tend to be mild

It is not intended for diagnostic, therapeutic, cosmetic, or medical use

Vitamin B12 is a co-factor in the transfer []

It is particularly useful when combined with Vitamin B12 for those following keto or weight-loss regimens