Vitamin B12 deficiency is rarely sudden. It's a slow declineoften driven by poor absorption, not just intake. Essential for energy metabolism and nerve function, low B12 can lead to fatigue, metabolic inefficiency, Did you know there was more than 1 form of Vitamin B12? Hydroxycobalamin Created naturally by bacteria fermentation and is the main type found in food. Easy conversion into methyl B12 with the Vitamin B D B12 Injections Near Ne Wilmington Urgent Care Clinic Wilmington Urgent Care And Family Clinic Vitamin B12 Deficiency: Symptoms, Causes & Treatment