do vitamin b12 injections cause constipation 7 questions about B supplements Understanding the B12 Vitamin Shot:
Understanding the B12 Vitamin Shot: Benefits, Risks, and Dosage Guide Can Vitamin B12 Deficiency Indicate Cancer? Know Warning Signs Vitamin B12 Injection Side Effects and Safety How Quickly Does B12 Shot Work? Does It Help to Lose Weight? Constipation in B12 deficiency is primarily neurogenic, due to autonomic and enteric neuropathy causing slow gut motility Constipation may precede anemia Often improves after B12 replacement Think of B12
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