Patients frequently experience: Fatigue and generalised weakness that persists despite adequate rest Breathlessness on exertion due to anaemia Palpitations and reduced exercise tolerance Pallor of the skin and mucous membranes These symptoms result from megaloblastic anaemia, where impaired DNA synthesis leads to the production of abnormally large, dysfunctional red blood cells with reduced oxygen-carrying capacity
When it comes to vitamin B12, your body needs this essential vitamin to build red blood cells, get energy out of the food you eat, support your nervous system, and more
Guide FAQ Quick answers about guide scope, access, and educational use context
When to see a doctor Please seek medical advice promptly if you have any of the following after a B12 injection: Chest pain, a fast or irregular heartbeat, or breathlessness
Several studies have linked B vitamins, including B12, to a lower risk of osteoporosis (a disease that weakens your bones) and hip fractures
Vitamin B12 injections are typically administered by a healthcare professional (doctor, nurse) into a muscle (intramuscularly)
