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Information for Patients: Patients with pernicious anemia should be informed that they will require monthly injections of vitamin B 12 for the remainder of their lives

Have you been feeling sluggish, fatigued, or mentally foggy

Vitamin B12 is not considered dangerous for most men, but excessive supplementation may mask underlying health issues, such as folate deficiency, if not managed with proper medical supervision

The frequency of B12 injections varies based on the severity and cause of deficiency: For significant deficiencies or pernicious anemia, daily or weekly shots may be started, then tapered to monthly maintenance doses