b12 combination injection Vitamin B-12 - Mobile and Clinic IV Therapy — ASAP IVs needles and syringes without needle (to use with any needle) are sold separately Vitamin B12 Cyanocobalamin injection 1000

Common Side Effects: Mild gastrointestinal issues (nausea, diarrhea, stomach discomfort) have been reported in a small percentage of individuals, especially at higher doses

Most patients describe it as a small pinch

Sublingual tablets or sprays : Designed to dissolve under the tongue, though evidence of superior efficacy over standard oral forms is limited

A sort of fluorescent green shortly after injection then fades back to normal Not what you're looking for

The NHS generally prescribes hydroxocobalamin injections for treating deficiency due to pernicious anaemia or malabsorption, as this has the most robust evidence base for these conditions