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Frequency depends on your baseline B12 levels and wellness goals: Initial deficiency correction: 12 injections per week until B12 levels stabilize
Seek immediate emergency care (call 999 or go to A&E) if you experience symptoms of a severe allergic reaction after a B12 injection, such as difficulty breathing, facial or throat swelling, widespread rash, or dizziness
Doctors in the UK are expected to practice in line with evidence-based guidelines, but they must consider individual patient circumstances, local resources, and the specific guidance from their respective health systems
skin flushing is far less common with nicotinamide than with niacin (nicotinic acid)
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