It helps improve nerve function, relieve numbness, tingling, and weakness, and supports overall nerve health
Animal products such as fish, meat, poultry, eggs, milk and milk products contain vitamin B12 naturally Plant foods do not contain vitamin B12 but fortified breakfast cereals are a source of vitamin B12 with high bioavailability for vegetarians Some nutritional yeast products also contain vitamin B12 Strict vegetarians are at a higher risk of developing vitamin B12 deficiency
[9] A related cause is reduced stomach acid production with age or from long-term use of proton-pump inhibitors, [10] H 2 blockers, or other antacids, [11] and interaction with metformin
Common side effects include redness, swelling or pain at the injection site, mild diarrhoea, itching, and a feeling of swelling all over the body