do vitamin b12 injections cause constipation in 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 Vitamin B12 Deficiency: Causes, Symptoms,
Vitamin B12 Deficiency: Causes, Symptoms, and Treatment Are you getting enough B12? Harvard Health Can Vitamin B12 Deficiency Indicate Cancer? Know Warning Signs Vitamin B12 Side Effects
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