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Summary: Feeling worse after a B12 injection typically reflects your body adjusting to replenished vitamin levels, triggering metabolic processes that may temporarily cause fatigue, headaches, or injection site discomfort
But which one is better
It helps with: DNA Synthesis : Its needed for making DNA, which controls all cell activities
These symptoms may suggest inadequate B12 replacement, concurrent iron or folate deficiency, or alternative haematological conditions requiring investigation
Always communicate with your provider
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