vitamin b12 injection vs tablets 💉 Injections 💊 – What’s the Difference?, It’s not just about preference… it’s all about something called intrinsic factor 🧬, If your body doesn’t produce enough intrinsic factor, you Vitamin B12 Intramuscular Injections Versus

World journal of gastroenterology: WJG

I heard someone mention there is some genetic variant which may be at play here

Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency (Cochrane review)

Symptoms of B12 deficiency include: Fatigue Low mood or personality/mood changes Irritability Lethargy Headaches Palpitations Loss of appetite Pale yellow tint to the skin A feeling of pins and needles (paraesthesia) Poor memory Impaired cognitive performance Depression Weakness Impaired digestion Inflammation Gastrointestinal lesions Neurological damage Since B12 is primarily found in animal products, any change in ones diet that leads to a decrease in the consumption of such products such as a vegan , vegetarian, or low-fat diet can increase the chance of a person developing a B12 deficiency