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Fermented foods (such as tempeh), nori, spirulina, chlorella algae, and unfortified nutritional yeast cannot be relied upon as adequate or practical sources of B-12.39,40 Vegans must regularly consume reliable sourcesmeaning B-12 fortified foods or B-12 containing supplementsor they could become deficient, as shown in case studies of vegan infants, children, and adults
Vitamin B12 (Cyanocobalamin) is known as the energy vitamin, helping to decrease fatigue and stimulating the use of fats, proteins, and carbohydrates in the body
Typically, B12 injections begin working immediately and the body will begin making new red blood cells within 72 hours
For larger volumes, repeated dosing or clients with limited deltoid mass, the ventrogluteal site is the safer alternative: it carries the greatest muscle depth and sits away from major nerves and vessels
B12 deficiency can lead to weakness and fatiguetwo culprits that often keep people from sticking to their diet and exercise plans
Administration routes include intramuscular and subcutaneous injections
