b12 injection methylcobalamin or cyanocobalamin (B12) 1000 mcg/mL, Multiple Dose Vial 30 mL vitamin b12 injections for animals

The angle of the shot does depend on how much fat you have under your skin, so please consult with a trusted healthcare professional like the staff of Invigor Medical to determine what angle is best for you

So on the narrow question does it stop working after N weeks, the honest answer is: no published evidence says it does, and the mechanism actually argues against it

Studies show that inhibiting nicotinamide Nmethyltransferase (NNMT) enhances metabolic health by reducing adipose tissue accumulation, improving insulin sensitivity, and promoting better energy utilization

Cyanocobalamin, while effective, requires conversion before it can be fully utilised

But, folate is key for avoiding anaemia and supporting pregnancy