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The body regulates B12 absorption through intrinsic factor, a protein produced in the stomach that binds to B12 and facilitates its uptake in the terminal ileum
Using the wrong volume of bacteriostatic water
Patients should seek emergency medical help (call 999) if they experience: Difficulty breathing, wheezing, or throat tightness Swelling of the face, lips, tongue, or throat (angioedema) Widespread urticarial rash (hives) developing rapidly Dizziness, fainting, or rapid heartbeat suggesting anaphylaxis These symptoms typically occur within minutes to hours of administration, most commonly with injectable preparations
It needs to be dosed daily