b12 injections not working chronic fatigue Vitamin Injections: What You Need To Know Vitamin B12 Deficiency: Symptoms, Causes

The choice between these methods depends on factors such as the specific formulation, patient preference, and healthcare provider recommendations

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Your GP may arrange periodic blood tests to ensure B12 levels remain adequate, though clinical response is generally more important than specific blood values once treatment is established

But no substantial studies have shown a direct effect of vitamin B12 on human weight loss efforts