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If you have a vitamin B12 deficiency, you might feel symptoms like fatigue, weakness, or tingling in your hands and feet

Conversely, some studies show that a deficiency in vitamin B12 may cause appetite loss, potentially leading to weight loss if left untreated ( If youre low or deficient in B12, your healthcare provider will likely recommend oral vitamin B12 supplements or injections to increase your blood levels ( summary Low levels of vitamin B12 can cause megaloblastic anemia, which is characterized by shortness of breath, headaches, and fatigue

To learn more about vitamin injections in general, read our blog post on vitamin injections

IMPORTANT SAFETY INFORMATION & COMMON SIDE EFFECTS Most side effects of B12/MIC are generally mild in nature and dissipate within a short time frame following administration