The injection is providing you with the necessary B vitamins regardless of your food intake, which is helpful especially if you have trouble eating a balanced diet (due to illness or other reasons)
Administration procedure and precautions Vitamin B12 injections are usually given intramuscularly, directly into a muscle, such as the gluteal muscle, deltoid muscle, or thigh
Your doctor will teach you the right way to do it
What Are the Benefits and Risks of Injectable B12
When comparing methylcobalamin vs cyanocobalamin, cyanocobalamin is widely used as it is generally considered more cost-effective
However, if your body has trouble absorbing B12 due to digestive issues, pills may not be as effective