Pernicious anaemia - the leading cause of B12 deficiency in the UK - is an autoimmune condition whereby your immune system attacks the cells in your stomach that produce intrinsic factor - a protein that your body uses to absorb vitamin B12
The supplier has versions for subQ and IM injections
Patients should be educated about potential symptoms of thyroid tumors, including persistent hoarseness, difficulty swallowing, or a neck mass, though these symptoms are rare and may have many other causes
In my experience, the intramuscular route is superior to subcutaneous injections
Patient evaluation and B12 deficiency confirmation by qualified healthcare professional
A Closer Look at B12 Injections for Mood Support As daylight hours shorten during fall and winter months, many people experience the combination of depressed mood, fatigue, and diminished interest in activities called seasonal affective disorder (SAD)