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22 May 2026 6 min Why do I feel worse after my B12 injection
This guide covers everything researchers need to know
For example, while the injection covers B, B, B, B, B, you still need other vitamins (like vitamin C, B folate, B if not supplemented separately, etc.) and minerals (iron, zinc, etc.) from food
Not every formulation is appropriate for every person
Vitamin B12 shots are most frequently prescribed to those who suffer from a deficiency of vitamin B12 or are likely to develop a deficiency
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