pernicious anemia and vitamin b12 injections for Anaemia: UK Treatment Guide – Bolt Pharmacy Vitamin B12 Injections: Hot Shots?
Description
People using B12 lipo shots often find it easier to stay consistent with planning and daily habits that support weight loss

I always got my meds fast

L-carnitine shots also typically work faster because the medication goes straight into the bloodstream.
Has your GP considered trying an injection of cyanocobalamin whilst youre there in the surgery