why do some people need b12 injections 10 Reasons to Look Into Vitamin How Quickly Does Vitamin B12

Aim for 1.2 to 1.6 grams per kilogram body weight daily

For vitamin B12 to be absorbed from the gut, it must bind to a protein called intrinsic factor, which limits how much B12 the gut can take in at one time

Some individuals opt for faster absorption with IM shots, while others prefer the slower, controlled absorption that subcutaneous injections provide

Wondering how to get the most from your dose of B12/MIC

Compared to other forms of vitamin B12, it is easier to crystallize and more air-stable.[3] Cyanocobalamin is usually obtained as a dark red, amorphous or crystalline powder, orthorhombic needles, or red crystals