what size syringe to use for b12 injections Injection Needle | B12 Syringes U100 Insulin Syringes Guide: Sizes,

Sharabi A, Cohen E, Sulkes J, et al

How is the B12 blood test performed

Process was quick and easy

So the practical takeaway is not oral is better or SC is better. It is: pick one route, follow the documented per-dose figure for the vial you have, and keep the route constant so that whatever you observe is not confounded by a mid-stream route change

TheNeo-B12 injection datasheet says this helps to quickly fill up B12 stores

-The price increases are not arbitrary they reflect the cost of maintaining pharmaceutical-grade production, complying with strict FDA/USP standards, and meeting high demand in a constrained supply environment