how long before b12 injection works Does It Take for Vitamin to Work? Simple Guide How Long Does It Take

This is, unfortunately, a common occurrence as we age Vegan or vegetarian diet as most B12 foods are from animal sources Excessive alcohol consumption Toxic metal exposure Some Auto-immune conditions Certain genetic polymorphism Some medications like antacids, anti-histamines, and some blood-sugar-lowering drugs

Mutations in ABCD4 cause a new inborn error of vitamin B12 metabolism

What I always emphasise: deep intramuscular injection only, never intravenous and if the patient takes levodopa for Parkinsons, consult their neurologist first

These require larger injection volumes to achieve the same dose, which some patients prefer (easier to measure precisely with an insulin syringe) and others dislike (more fluid volume under the skin)