Pernicious Anemia: Definition, Symptoms, Causes & Treatment Always Tired? B12 Injections Could Help We've been seeing more stories recently of people being hospitalised after taking nangs so what's happening? A big reason is we're seeing more of these large canisters being sold, which can If you've been feeling run down lately you could be deficient in Vitamin B12. Physical symptoms of B12 deficiency include mouth ulcers, fatigue, digestive issues and muscle aches. There are also neurological Vitamin B12 deficiency Guide: Causes, Symptoms and Treatment Options Benefits of B12 Injections for Optimal Health