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The frequency of vitamin injections depends on your specific needs and the type of vitamin being administered

2024 May;49(5):102489

Other physical reactions Headaches Dizziness for a few hours Feeling jittery or nervous briefly Mild fever These effects usually disappear within 12 days

This determination was based on chronic toxicity studies, genotoxicity studies, and human clinical trial safety data

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[3] Initial treatment of pernicious anemia typically consists of 1,000 mcg intramuscularly daily for one week, then weekly for four weeks, transitioning to 1,000 mcg monthly for life